12,296 results match your criteria Skull Base Anatomy


Microsurgical Anatomy of the Jugular Foramen Applied to Surgery of Glomus Jugulare via Craniocervical Approach.

Front Surg 2020 15;7:27. Epub 2020 May 15.

Neurosurgery Department, Neurological Institute of Curitiba, Curitiba, Brazil.

The jugular foramen remains one of the most complex regions of the human body. Approaching lesions in this area requires extensive anatomical knowledge and experience, due to the many critical neurovascular structures passing through or around the jugular foramen. Here, we present a concise review of the microsurgical anatomy of the jugular foramen in relation to the craniocervical approach. Read More

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http://dx.doi.org/10.3389/fsurg.2020.00027DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7243180PMC

Cerebrospinal fluid leakage due to nasoseptal flap partial necrosis: A pitfall for skull base reconstruction of endoscopic endonasal surgery.

Surg Neurol Int 2020 23;11:121. Epub 2020 May 23.

Departments of Neurosurgery, Head and Neck Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, Japan.

Background: Vascularized nasoseptal flaps allow for the reconstruction of large dural defects and have remarkably reduced the incidence of postoperative complications during endoscopic endonasal skull base surgery. Nevertheless, some complications related to nasoseptal flap have been reported. Flap necrosis is a rare, but serious issue is associated with meningitis and cerebrospinal fluid (CSF) leak. Read More

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http://dx.doi.org/10.25259/SNI_117_2020DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7265470PMC

Repair of the sellar floor using bioresorbable polydioxanone foils after endoscopic endonasal pituitary surgery.

Neurosurg Focus 2020 Jun;48(6):E16

Objective: Postoperative CSF leakage is the most common unwanted sequela of transnasal pituitary surgery. The individual anatomy, the extent of the sellar opening, and the occurrence of an intraoperative CSF leak add to the risk of postoperative rhinorrhea. Despite the current sophistication and recent developments in pituitary surgery, watertight closure of the sellar floor remains a matter of concern. Read More

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http://dx.doi.org/10.3171/2020.3.FOCUS2064DOI Listing

Alterations to vestibular morphology in highly bred domestic dogs may affect balance.

Anat Rec (Hoboken) 2020 Jun 1. Epub 2020 Jun 1.

The Graduate Center, City University of New York, New York, New York, USA.

The modern domestic dog (Canis lupus familiaris) provides an excellent model to examine the effects of cranial modification. Extreme variation in skull length among dog breeds due to high levels of selective breeding is known to be linked to disorders of the head and neck. Such alteration may also influence sensory organs including those of the vestibular system (VS), one of the most fundamental sense organs, essential in maintaining balance. Read More

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http://dx.doi.org/10.1002/ar.24423DOI Listing

Mouthguard use and TMJ injury prevention with different occlusions: A three-dimensional finite element analysis.

Dent Traumatol 2020 May 27. Epub 2020 May 27.

Department of Oral Cell Biology and Functional Anatomy, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU UniversityAmsterdam, Amsterdam, The Netherlands.

Background/aims: There is a lack of data regarding the temporomandibular joint's mechanical response during an impact to the orofacial region. The aim of this study was to analyze the biomechanical effects of wearing a mouthguard (MG) on the impact response of the mandibular condyle and articular disc according to the type of occlusion. The hypothesis was that the MG would minimize the effect in those structures, regardless of the occlusion type. Read More

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http://dx.doi.org/10.1111/edt.12577DOI Listing

TBX1 Regulates Chondrocyte Maturation in the Spheno-occipital Synchondrosis.

J Dent Res 2020 May 22:22034520925080. Epub 2020 May 22.

Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Japan.

The synchondrosis in the cranial base is an important growth center for the craniofacial region. Abnormalities in the synchondroses affect the development of adjacent regions, including the craniofacial skeleton. Here, we report that the transcription factor , the candidate gene for DiGeorge syndrome, is expressed in mesoderm-derived chondrocytes and plays an essential and specific role in spheno-occipital synchondrosis development by inhibiting the expression of genes involved in chondrocyte hypertrophy and osteogenesis. Read More

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http://dx.doi.org/10.1177/0022034520925080DOI Listing

A Cadaveric Study on the Course of the Cervical Segment of the Internal Carotid Artery and Its Variations.

Cureus 2020 Apr 13;12(4):e7663. Epub 2020 Apr 13.

Anatomy, All India Institute of Medical Sciences, Mangalagiri, IND.

Introduction The internal carotid artery is the chief source of blood supply to the brain. Variations of the internal carotid artery, such as curved, kinking, and coiling, might result in significant neurovascular problems due to alterations in the dynamics of blood flow. The elongated and tortuous course of the internal carotid artery in the cervical region has a high chance of being damaged during head and neck surgeries. Read More

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http://dx.doi.org/10.7759/cureus.7663DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7224583PMC

Combined unilateral coronal-lambdoid suture synostosis: surgical outcome of suturectomy and postoperative helmet therapy.

Childs Nerv Syst 2020 May 12. Epub 2020 May 12.

Division of Pediatric Neurosurgery, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, South Korea.

Introduction: Nonsyndromic, multi-suture craniosynostosis is not common, especially those involving unilateral coronal and lambdoid sutures. Based on the experience on 6 cases, we analyzed the skull morphology of combined unilateral coronal-lambdoid suture synostosis and evaluated the surgical outcome of suturectomy.

Methods: Patients who underwent an operation for craniosynostosis in Seoul National University Children's Hospital from 2010 to 2018 were reviewed. Read More

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http://dx.doi.org/10.1007/s00381-020-04650-2DOI Listing

Expanded endoscopic endonasal approach for extending suprasellar and third ventricular lesions.

Acta Neurochir (Wien) 2020 May 9. Epub 2020 May 9.

Department of Neurological Surgery, The Ohio State University Medical Center, Columbus, OH, USA.

Background: Expanded endonasal approaches can provide direct access to the midline skull base from the anterior cranial fossa to the ventral foramen magnum. Surgical strategies of bone drilling, dural opening, and intradural dissection can determine the area of surgical exposure and instrument handling, affecting the safety of devascularizing/debulking suprasellar tumors.

Methods: We describe an expanded endoscopic endonasal approach for suprasellar lesions, with stepwise image-guided dissections highlighting surgical pearls and pitfalls to enhance surgical safety. Read More

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http://dx.doi.org/10.1007/s00701-020-04368-9DOI Listing

Assessment of International Frontal Sinus Anatomy Classification among senior residents through inter- and intra-rater reliability.

Saudi Med J 2020 May;41(5):466-472

Department of Rhinology and Skull Base Surgery, King Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia. E-mail.

Objectives: To evaluate the International Frontal Sinus Anatomy Classification (IFAC) reliability among Saudi board otorhinolaryngology senior residents.

Methods: This cross-sectional study was carried out at King Abdulaziz University Hospital, Riyadh, Saudi Arabia between April 2019 and December 2019, included 32 senior residents. Questionnaires with 4 computed tomography images showing the different frontal cell types were used in this survey. Read More

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http://dx.doi.org/10.15537/smj.2020.5.25071DOI Listing

Comparison of Materials Used for 3D-Printing Temporal Bone Models to Simulate Surgical Dissection.

Ann Otol Rhinol Laryngol 2020 May 4:3489420918273. Epub 2020 May 4.

Department of Otolaryngology, University Hospitals Cleveland Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.

Objective: To identify 3D-printed temporal bone (TB) models that most accurately recreate cortical mastoidectomy for use as a training tool by comparison of different materials and fabrication methods.

Background: There are several different printers and materials available to create 3D-printed TB models for surgical planning and trainee education. Current reports using Acrylonitrile Butadiene Styrene (ABS) plastic generated via fused deposition modeling (FDM) have validated the capacity for 3D-printed models to serve as accurate surgical simulators. Read More

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http://dx.doi.org/10.1177/0003489420918273DOI Listing

The utility of 3-dimensional-printed models for skull base meningioma surgery.

Ann Transl Med 2020 Mar;8(6):370

Department of Neurosurgery/Neuro-oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510000, China.

Background: Skull base meningioma surgery is often difficult and complicated to perform. Therefore, this study aims to investigate the effectiveness of 3-dimensional (3D)-printed models of skull base meningioma in the representation of anatomical structures, the simulation of surgical plans, and patient education on surgical outcomes.

Methods: A retrospective study of 35 patients (3D group: 19 patients and non-3D group: 16 patients) with skull base meningioma was conducted. Read More

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http://dx.doi.org/10.21037/atm.2020.02.28DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7186736PMC

expression and its prognostic significance in lung adenocarcinoma.

Ann Transl Med 2020 Mar;8(6):341

Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China.

Background: Studies have increasingly shown that carbamoyl phosphate synthetase 1 () plays a vital role in the occurrence and development of human malignant disease. Unfortunately, the detailed function of in the development and prognosis of lung cancer, especially lung adenocarcinoma (LADC), is still not fully understood. In this research, we performed a comprehensive bioinformatics analysis with respect to the function of in human LADC. Read More

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http://dx.doi.org/10.21037/atm.2020.02.146DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7186668PMC

Draf III frontal sinus surgery for the treatment of Pott's puffy tumour in adults: our case series and a review of frontal sinus anatomy risk factors.

Eur Arch Otorhinolaryngol 2020 Apr 29. Epub 2020 Apr 29.

Department of ENT, Royal National Ent and Eastman Dental Hospitals, 47-49 Huntley St Bloomsbury, London, WC1E 6DG, UK.

Purpose: We present our case series of four adult patients with Pott's puffy tumour (PPT), successfully treated with Draf III over a mean period of 11 months. A critical review of the literature is also provided.

Methods: A retrospective review of patients undergoing Draf III for PPT from January 2018 to January 2019 was performed. Read More

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http://dx.doi.org/10.1007/s00405-020-05980-2DOI Listing

Sexual Dimorphism in Osteometric Indices of Kuri Cattle Skulls.

Niger J Physiol Sci 2019 Dec 31;34(2):159-165. Epub 2019 Dec 31.

Department of Veterinary Anatomy, University of Ibadan, Ibadan, Nigeria..

This work investigated 30 skulls of the Kuri cattle comprising 15 males and 15 females, of three age groups, 10 young (9 months to less than 3 years), 10 middle aged (3 to 5 years) and 10 aged (greater than 5 years). The skulls were prepared using hot water maceration technique. Using Ruler, thread and divider; 59 Osteometric parameters were taken to determine sexual dimorphism, only 6 indices showed statistically significant differences between the sexes. Read More

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December 2019

Analysis of anatomical variation of the inclination of lamellas attached to the skull base and its correlation with the anterior ethmoidal artery floating in the ethmoid sinus for use in endoscopic sinus surgery.

Surg Radiol Anat 2020 Apr 22. Epub 2020 Apr 22.

Department of Otorhinolaryngology, Toho University Omori Medical Center, 6-11-1, Omori-Nishi, Ota-ku,, Tokyo, 143-8541, Japan.

Purpose: Attention to the inclination of lamellas attached to the skull base, including the basal lamella of the middle turbinate, facilitates the intraoperative identification of each lamella without requiring the use of a navigation system. We classified the inclination between the lamella and the skull base in preoperative computed tomography (CT) images and examined the relationship between the lamellas attached to the skull base, including the basal lamella of the middle turbinate, and the position of the anterior ethmoidal artery (AEA). We aimed to develop a preoperative classification to help prevent intraoperative injury of the AEA. Read More

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http://dx.doi.org/10.1007/s00276-020-02474-yDOI Listing

Effects of reduced connexin43 function on skull development in the Cx43 mutant mouse that models oculodentodigital dysplasia.

Bone 2020 Jul 19;136:115365. Epub 2020 Apr 19.

Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A 5C1, Canada. Electronic address:

Oculodentodigital dysplasia (ODDD) is a disease caused by mutations in the GJA1 gene that encodes the gap-junctional protein connexin43 (Cx43). ODDD affects multiple organs, but craniofacial anomalies are typical. However, details on the timing of phenotypic presentation of these abnormalities and their correspondence with potential cellular changes are incomplete. Read More

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http://dx.doi.org/10.1016/j.bone.2020.115365DOI Listing

Retropharyngeal internal carotid artery: a review of three cases.

Oral Maxillofac Surg 2020 Jun 21;24(2):255-261. Epub 2020 Apr 21.

Oral and Maxillofacial Radiology, University of Florida College of Dentistry, Gainesville, USA.

Introduction: The internal carotid artery (ICA) can take multiple pathways as it extends from the carotid bifurcation to the skull base. An aberration of its normal pathway may place the ICA in a retropharyngeal position in close proximity to the posterior pharyngeal wall. Radiographic classification is based on its proximity to the pharynx and/or pathway. Read More

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http://dx.doi.org/10.1007/s10006-020-00845-8DOI Listing

Reversible Endoscopic Medial Maxillectomy: Endonasal Approach to Diseases of the Maxillary Sinus.

Int Arch Otorhinolaryngol 2020 Apr 27;24(2):e247-e252. Epub 2020 Feb 27.

Department of Otolaryngology and Neurosurgery, Albany Medical Center, Albany, NY, United States.

 The endoscopic access has reduced the morbidity associated with external approaches in diseases of the maxillary sinus. A reversible endoscopic medial maxillectomy (REMM) is presented as an alternative for treatment of benign maxillary diseases.  To describe the REMM technique and report four cases of patients with benign maxillary sinus conditions treated through this approach. Read More

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http://dx.doi.org/10.1055/s-0040-1701267DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153922PMC

Development of an Experimental Model for Studying the Nasosinusal and Skull Base Arterial and Venous Systems Using Iodinated Contrast and Latex in Cadavers.

World Neurosurg 2020 Apr 6. Epub 2020 Apr 6.

Department of Otorhinolaryngology, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de Sao Paulo School of Medical Sciences, São Paulo/SP, Brasil.

Background: Cadaver dissection remains one of the most reliable and safest ways to study anatomy, whereas computed tomography angiography (CTA) is an essential technology for enabling students to become familiar with human anatomy and surgical planning. Thus, the convergence of both radiologic and anatomic information is important for surgical success, especially in regions of complex anatomy such as the nasosinusal and skull base regions. Here we propose an experimental model in formalinized cadaver heads consisting of intravascular injection of colored latex and iodinated contrast mixture, followed by CTA scans of the nasosinusal and skull base arterial and venous systems before dissection. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.03.137DOI Listing

Focused endoscopic endonasal craniocervical junction approach for resection of retro-odontoid lesions: surgical techniques and nuances.

Acta Neurochir (Wien) 2020 Jun 8;162(6):1275-1280. Epub 2020 Apr 8.

Department of Neurological Surgery, The Ohio State University Medical Center, N-1049 Doan Hall, 410 West 10th, Avenue, Columbus, OH, 43210, USA.

Background: Lesions posterior to the odontoid process pose a surgical challenge. Posterolateral approaches to this region are considerably risky for the spinal cord. Transoral approaches are limited in terms of exposure and can also carry morbidity. Read More

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http://dx.doi.org/10.1007/s00701-020-04319-4DOI Listing

Preliminary study on sexual dimorphism of metric traits of cranium and mandible in a modern Italian skeletal population and review of population literature.

Leg Med (Tokyo) 2020 Apr 1;44:101695. Epub 2020 Apr 1.

LABANOF, Laboratorio di Antropologia e Odontologia Forense, Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Via Luigi Mangiagalli n. 37, 20133 Milano, Italy.

This study aims to assess the sexual dimorphism of skull in a modern skeletal collection through a direct anthropometric methodology by using a logistic regression analysis as statistical approach in order to provide specific regression formulae for the Italian population. Thirtyfour measurements (24 from cranium, 10 from mandible; 33 linear distances, one angle) were taken on 80 individuals (40 males, 40 females). A stepwise discriminant function analysis selected the combination of variables which best discriminated between sexes, and a cross-validation assessed the accuracy rate of the original sample. Read More

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http://dx.doi.org/10.1016/j.legalmed.2020.101695DOI Listing

Expanded transnasal approaches to the skull base in the Middle East: Where do we stand?

Ann Saudi Med 2020 Mar-Apr;40(2):94-104. Epub 2020 Apr 2.

From the Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia.

Background: Endoscopic transnasal surgery has gained rapid global acceptance over the last two decades. The growing literature and understanding of anterior skull base endoscopic anatomy, in addition to new dedicated endoscopic instruments and tools, have helped to expand the use of the transnasal route in skull base surgery.

Objective: Report our early experience in expanded endoscopic transnasal surgery (EETS) and approach to skull base neoplasms. Read More

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http://dx.doi.org/10.5144/0256-4947.2020.94DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118227PMC
April 2020
0.705 Impact Factor

Alterations in skull base anatomy in intrauterine and postnatal repaired myelomeningoceles.

Childs Nerv Syst 2020 Apr 1. Epub 2020 Apr 1.

Department of Neurosurgery, Universidade Federal de Sao Paulo, Sao Paulo, SP, Brazil.

Purpose: The aim of this study was to analyze the skull base anatomy of patients who underwent intrauterine or postnatal myelomeningocele repair and to determine its relationship with hydrocephalus.

Methods: This was a retrospective cross-sectional study that analyzed three groups: the postnatal group, 57 patients who underwent myelomeningocele repair up to 48 h after birth; the fetal group, 70 patients who underwent myelomeningocele repair between 19 and 27 weeks of gestation; and a control group (65). We compared the rate of hydrocephalus treatment, the clivus-supraocciput angle (CSA), and the Welcher angle. Read More

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http://dx.doi.org/10.1007/s00381-020-04587-6DOI Listing

Expert Consensus on Procedures and Operations of Navigation-guided Needle Biopsy Techniques for Skull Base Tumours.

Chin J Dent Res 2020 ;23(1):27-32

Skull base surgery is an interdisciplinary subject. The anatomical structures in the skull base related to oral and maxillofacial surgery include the parapharyngeal space, the pterygopalatine fossa and the infratemporal space. This operative area is one of the most challenging surgical areas in oral and maxillofacial surgery due to its deep site, complex anatomy and high risk. Read More

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http://dx.doi.org/10.3290/j.cjdr.a44333DOI Listing

Euclidean Relationship between the Superior Semicircular Canal and the Arcuate Eminence.

J Neurol Surg B Skull Base 2020 Apr 12;81(2):165-171. Epub 2019 Mar 12.

Department of Otolaryngology-Head and Neck Surgery, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States.

 This study was aimed to better characterize the surgical anatomy of the floor of the middle cranial fossa using three dimensional Euclidean relationships between the arcuate eminence (AE), the superior semicircular canal (SSC), and the geniculate ganglion (GG).  Submillimeter distances were recorded from computed tomography (CT) scans of 50 patients (100 sides). The AE, apex of the SSC, and the GG were identified and three dimensional distances measured. Read More

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http://dx.doi.org/10.1055/s-0039-1683432DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7082170PMC

Single-Step Resection of Sphenoorbital Meningiomas and Orbital Reconstruction Using Customized CAD/CAM Implants.

J Neurol Surg B Skull Base 2020 Apr 1;81(2):142-148. Epub 2019 Mar 1.

Center for Neurosurgery, University Hospital of Cologne, Cologne, Germany.

 Computer-aided design and manufacturing (CAD/CAM) implants are fabricated based on volumetric analysis of computed tomography (CT) scans and are routinely used for the reconstruction of orbital fractures. We present three cases of patients with sphenoorbital meningiomas that underwent tumor resection, orbital decompression, and orbital reconstruction with patient specific porous titanium or acrylic implants in a single procedure.  The extent of bone resection of the sphenoorbital meningiomas was planned in a virtual three-dimensional (3D) environment using preoperative thin-layer CT data. Read More

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http://dx.doi.org/10.1055/s-0039-1681044DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7082166PMC

Ventrolateral Tonsillar Position Defines Novel Chiari 0.5 Classification.

World Neurosurg 2020 Apr;136:444-453

Department of Neurological Surgery, New York-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA. Electronic address:

Background: Cervicomedullary compression in young children has been described in the context of Chiari type 1 malformation, with symptoms associated with the extent of tonsillar herniation below McRae line. Historically, Chiari type 1 malformation has been defined by tonsillar herniation of at least 5 mm. However, in certain populations, including very young children, Chiari symptoms may be present without this finding. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.01.147DOI Listing

The membrane of Liliequist-a safe haven in the middle of the brain. A narrative review.

Acta Neurochir (Wien) 2020 Mar 19. Epub 2020 Mar 19.

Department of Neurosurgery, Erasmus MC University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands.

Background: The membrane of Liliequist is one of the best-known inner arachnoid membranes and an essential intraoperative landmark when approaching the interpeduncular cistern but also an obstacle in the growth of lesions in the sellar and parasellar regions. The limits and exact anatomical description of this membrane are still unclear, as it blends into surrounding structures and joins other arachnoid membranes.

Methods: We performed a systematic narrative review by searching for articles describing the anatomy and the relationship of the membrane of Liliequist with surrounding structures in MEDLINE, Embase and Google Scholar. Read More

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http://dx.doi.org/10.1007/s00701-020-04290-0DOI Listing

[Primary skull base chondrosarcoma: a clinicopathological analysis].

Zhonghua Bing Li Xue Za Zhi 2020 Mar;49(3):239-243

Department of Pathology, the First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China.

To investigate the clinicopathological features, immunophenotype, molecular characteristics and differential diagnosis of primary skull base chondrosarcoma. Nine cases of primary skull base chondrosarcoma were collected at the First Affiliated Hospital of Fujian Medical University, from January 2006 to June 2019, reviewed for the clinical and radiologic data and morphologic features, immunophenotype and molecular characteristics. Among all the 9 cases, six were male, three were frmale, with average age 47 years, and median age 47 years; five cases were WHO gradeⅠ, and four were WHO grade Ⅱ. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0529-5807.2020.03.006DOI Listing

Quantitative Analysis of the Far-Lateral, Supra-Articular Transcondylar Transtubercular Approach Using Cadaveric Computed Tomography and Magnetic Resonance Imaging.

Oper Neurosurg (Hagerstown) 2020 Mar 18. Epub 2020 Mar 18.

Department of Neurosurgery, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui, Japan.

Background: Removing the jugular tubercle (JT) is regarded as an important step in the far-lateral approach; however, few cadaveric studies have objectively evaluated it.

Objective: To quantitatively analyze the effect of JT removal in the far-lateral approach, using cadaveric computed tomography (CT) and magnetic resonance (MR) imaging.

Methods: The far-lateral, supra-articular transcondylar transtubercular approach was employed on 23 sides of 13 formalin-fixed cadaveric heads. Read More

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http://dx.doi.org/10.1093/ons/opaa035DOI Listing

Intraoperative Use of Microscope-Integrated Flow 800 - A Valuable Tool in Surgical Management of Anterior Communicating Artery Aneurysm: Our Institutional Experience.

Asian J Neurosurg 2020 Jan-Mar;15(1):26-30. Epub 2020 Feb 25.

Department of Neurosurgery, Fujita Health University, Babuntane Hospital, Nagoya, Japan.

Background: Flow 800 is microscope-integrated analytical visualization tool which analyses the indocyanine green (ICG) video sequence and converts it into an intensity diagram. This allows an objective evaluation of the result rather than subjective assessment of ICG fluorescence. The anatomy of anterior communicating artery region is complex because of multiple vessels and perforators in small space; hence, there is a need of objective assessment tool which can give precise idea about vascular compromise. Read More

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http://dx.doi.org/10.4103/ajns.AJNS_342_19DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057888PMC
February 2020

The atlas of StW 573 and the late emergence of human-like head mobility and brain metabolism.

Sci Rep 2020 Mar 16;10(1):4285. Epub 2020 Mar 16.

School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS, 2050, South Africa.

Functional morphology of the atlas reflects multiple aspects of an organism's biology. More specifically, its shape indicates patterns of head mobility, while the size of its vascular foramina reflects blood flow to the brain. Anatomy and function of the early hominin atlas, and thus, its evolutionary history, are poorly documented because of a paucity of fossilized material. Read More

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http://dx.doi.org/10.1038/s41598-020-60837-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075956PMC

Surgical nuances of the expanded endoscopic anterior skull base craniectomy for hyperostotic meningioma resection.

Acta Neurochir (Wien) 2020 Jun 15;162(6):1269-1274. Epub 2020 Mar 15.

Department of Neurological Surgery, The Ohio State University Medical Center, N-1049 Doan Hall, 410 West 10th, Avenue, Columbus, OH, 43210, USA.

Background: The rostral expanded endoscopic approach (EEA) to anterior cranial fossa (ACF) has several advantages over transcranial/craniofacial surgery, providing early access to the vascular supply of tumors and reducing morbidities of craniotomy especially that of brain retraction. This article presents endoscopic landmarks and nuances for a wide ACF corridor, with stepwise image-guided dissections highlighting surgical tricks and techniques to enhance surgical safety.

Methods: We describe an expanded endoscopic endonasal anterior skull base craniectomy for a recurrent large olfactory groove hyperostotic meningioma, with correlated cadaveric dissections. Read More

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http://dx.doi.org/10.1007/s00701-020-04277-xDOI Listing

Comparative anatomical analysis between the minipterional and supraorbital approaches.

J Neurosurg 2020 Mar 13:1-9. Epub 2020 Mar 13.

Departments of1Neurosurgery and.

Objective: Keyhole approaches, namely the minipterional approach (MPTa) and the supraorbital approach (SOa), are alternatives to the standard pterional approach to treat lesions located in the anterior and middle cranial fossae. Despite their increasing popularity and acceptance, the indications and limitations of these approaches require further assessment. The purpose of the present study was to determine the differences in the area of surgical exposure and surgical maneuverability provided by the MPTa and SOa. Read More

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http://dx.doi.org/10.3171/2019.12.JNS193196DOI Listing

The endoscopic endonasal eustachian tube anterolateral mobilization strategy: minimizing the cost of the extreme-medial approach.

J Neurosurg 2020 Mar 13:1-12. Epub 2020 Mar 13.

1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona.

Objective: The ventral jugular foramen and the infrapetrous region are difficult to access through conventional lateral and posterolateral approaches. Endoscopic endonasal approaches to this region are obstructed by the eustachian tube (ET). This study presents a novel strategy for mobilizing the ET while preserving its integrity. Read More

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http://dx.doi.org/10.3171/2019.12.JNS192285DOI Listing

Morphology and morphometry of the foramen venosum: a radiographic study of CBCT images and literature review.

Surg Radiol Anat 2020 Jul 11;42(7):779-790. Epub 2020 Mar 11.

Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.

Purpose: The goal of this study was to assess the morphological variations, location, and morphometric measurements of the foramen venosum (FV) and analyse its interrelationships with other foramina on cone-beam computed tomography (CBCT) scans.

Methods: A total of 269 individual CBCT scans were evaluated retrospectively. The presence or absence of FVs and their diameter, shape, and confluence to foramen ovale were recorded. Read More

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http://dx.doi.org/10.1007/s00276-020-02450-6DOI Listing

Decompression of Cavernous Sinus for Trigeminal Neuropathic Pain From Perineural Spread of Tumor: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2020 Mar 6. Epub 2020 Mar 6.

Department of Neurosurgery, University of Arkansas for Medical Sciences College of Medicine, Little Rock, Arkansas.

Head and neck malignancies with perineural spread are rare. Patients can present with neuropathic pain and cranial nerve palsies.1 Skull base approaches for surgical decompression are a consideration for patients to provide symptom relief. Read More

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http://dx.doi.org/10.1093/ons/opaa033DOI Listing

Orbitomeningeal Band in Transcavernous Dissection and Anterior Clinoidectomy: 3-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2020 Mar 6. Epub 2020 Mar 6.

LINT, Facultad de Medicina, Universidad Nacional de Tucumán, Tucumán, Argentina.

The orbitomeningeal or meningo-orbital band (MOB) has been described as the most superficial dural band responsible for tethering the frontotemporal basal dura to the periorbita.1,2 The MBO usually interferes with the surgical approach to the most profound areas of the anterior and middle skull base. It is known that there are no cranial nerves on the lateral surface of the superior orbital fissure; therefore, the neurosurgeon can cut the MOB without causing any neurological deficit and, at the same time, achieving fully exposure of the anterior clinoid process1-4 and/or the lateral wall of the cavernous sinus. Read More

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http://dx.doi.org/10.1093/ons/opaa037DOI Listing

Extended Middle Cranial Fossa Approach for Lesions Invading Infratemporal Fossa: Anatomic Study and Clinical Application.

World Neurosurg 2020 Mar 4;138:83. Epub 2020 Mar 4.

Department of Neurosurgery, Carolina Neuroscience Institute, Raleigh, North Carolina, USA.

Skull base tumors arising from the middle cranial fossa and invading of the infratemporal fossa (ITF) and middle cranial fossa are challenging for neurosurgeons, because of complex anatomy and critical neurovascular structure involvement. The first pioneering ITF approaches resulted in invasive procedures and carried a high rate of surgical morbidity. However, the acquisition of deep anatomical knowledge, and the development operative skills and reconstruction techniques allowed surgeons to achieve total or near total resection of many ITF lesions with a low morbidity rate. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.02.141DOI Listing

Stereoscopic three-dimensional visualization: interest for neuroanatomy teaching in medical school.

Surg Radiol Anat 2020 Jun 29;42(6):719-727. Epub 2020 Feb 29.

Department of Anatomy, Faculté de médecine Lyon-Est, Université de Lyon, Université Claude Bernard Lyon I, 8 Avenue Rockefeller, 69003, Lyon, France.

Purpose: The anatomy of both the brain and the skull is particularly difficult to learn and to teach. Since their anatomical structures are numerous and gathered in a complex tridimensional (3D) architecture, classic schematical drawing or photography in two dimensions (2D) has difficulties in providing a clear, simple, and accurate message. Advances in photography and computer sciences have led to develop stereoscopic 3D visualization, firstly for entertainment then for education. Read More

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http://dx.doi.org/10.1007/s00276-020-02442-6DOI Listing

MICROSURGICAL ANATOMY REVIEW OF BIFRONTAL LIMITED TRANSBASAL APPROACH - QUANTITATIVE AND ANATOMY STUDY.

World Neurosurg 2020 Feb 27. Epub 2020 Feb 27.

Institute of Neurological Sciences (ICNE), São Paulo. Praça Amadeu Amaral, 27 - 5º andar - Bela Vista, São Paulo, Brazil; Department of Neurosurgery and Microsurgical Anatomy. Hospital Beneficência Portuguesa, R. Maestro Cardim, 769 - Bela Vista, São Paulo, Brazil.; Adjunct Associate Professor at the Department of Neurosurgery. Mayo Clinic, Jacksonville, Florida, United States.

Introduction: The bifrontal transbasal approach is an anterior midline skull base approach to anterior skull base, sellae region and if needed to posterior skull base in the midline, often used for tumoral lesions but also useful for vascular of infectious pathologies.

Materials And Methods: Descriptive anatomical study, 5 formalin-fixed human cadaveric heads were used injected with colored silicone. The dissection was made step-by-step to describe every anatomical structure encountered. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.02.114DOI Listing
February 2020

Cavernous sinus and abducens nerve in human fetuses near term.

Surg Radiol Anat 2020 Jul 28;42(7):761-770. Epub 2020 Feb 28.

Department of Anatomy, Tokyo Dental College, Tokyo, Japan.

A long tortuous course of the abducens nerve (ABN) crossing a highly curved siphon of the internal carotid artery is of interest to neurosurgeons for cavernous sinus surgery. Although a "straight" intracavernous carotid artery in fetuses can change into an adult-like siphon in infants, there is no information on when or how the unique course of ABN is established. Histological observations of 18 near-term fetuses (12 specimens of frontal sections and 6 specimens of sagittal sections) demonstrated the following: (I) the ABN consistently took a straight course crossing the lateral side of an almost straight intracavernous carotid artery; (II) the straight course was maintained when sympathetic nerves joined; (III) few parasellar veins of the developing cavernous sinus separated the ABN from the ophthalmic nerve; and (IV) immediately before the developing tendinous annulus for a common origin of extraocular recti, the ABN bent laterally to avoid a passage of the thick oculomotor nerve. Read More

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http://dx.doi.org/10.1007/s00276-020-02443-5DOI Listing

Radiologic analysis of the location, shape and size of the external aperture of the carotid canal in children.

Surg Radiol Anat 2020 Jul 27;42(7):749-759. Epub 2020 Feb 27.

Faculty of Medicine, Department of Otorhinolaryngology, Mersin University, Mersin, Turkey.

Objectives: This retrospective computed tomography (CT) study was aimed to assess the growth dynamic of the external aperture of the carotid canal (EACC) in children aged between 1 and 20 years.

Methods: Two hundred patients (sex 100 females/100 males, average age 10.50 ± 5. Read More

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http://dx.doi.org/10.1007/s00276-020-02448-0DOI Listing

[Application of endoscopic resection of benign tumor in infratemporal fossa].

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020 Feb;55(2):87-93

Department of Otorhinolaryngology Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Otorhinolaryngology Head and Neck Surgery Key Laboratory of Shandong Province, Qingdao 266003, China; Department of Skull Base Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266003, China; Department of Allergy, the Affiliated Hospital of Qingdao University, Qingdao 266003, China.

To explore the application of endoscopy and clinical effect of endoscopic resection of benign tumor in infratemporal fossa. The clinical data of 11 patients with benign tumors in infratemporal fossa admitted to the Department of Otorhinolaryngology Head and Neck Surgery and Skull Base Surgery of the Affiliated Hospital of Qingdao University from January 2016 to September 2018 were retrospectively analyzed. There were 6 males and 5 females, with the age ranging from 11 to 63 years old. Read More

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http://dx.doi.org/10.3760/cma.j.issn.1673-0860.2020.02.002DOI Listing
February 2020

Diagnostic Value of 3D Segmentation in Understanding the Anatomy of Human Inner Ear Including Malformation Types.

Ear Nose Throat J 2020 Feb 13:145561320906621. Epub 2020 Feb 13.

Department of Otolaryngology, Neurotology & Skull Base Surgery, King Saud University, Riyadh, Saudi Arabia.

Objective: To understand the anatomical and dimensional variations of the human inner ear using 3-dimensional (3D) segmentation within the Middle East population.

Design: Retrospective study.

Setting: King Abdullah Ear Specialist Center (KAESC) Riyadh, Saudi Arabia. Read More

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http://dx.doi.org/10.1177/0145561320906621DOI Listing
February 2020
0.881 Impact Factor

Expanded Endoscopic Endonasal Transtuberculum Approach for Tuberculum Sellae Meningioma: Operative Video With 360-Degree Fly-Through and Surgical Rehearsal in Virtual Reality: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2020 Feb 11. Epub 2020 Feb 11.

Department of Otolaryngology, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia.

This video demonstrates the technique of the "Expanded Endoscopic Endonasal Transtuberculum Approach" and the utility of preoperative planning and surgical rehearsal in virtual reality (VR).  VR can be utilized to improve endoscopic skull base surgery in various ways. The patient is a 57-yr-old woman with sudden right abducens palsy. Read More

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http://dx.doi.org/10.1093/ons/opaa017DOI Listing
February 2020

Parapharyngeal Dissection for Papillary Thyroid Cancer.

VideoEndocrinology 2019 18;6(1). Epub 2019 Mar 18.

Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston, Texas.

Although lymph node metastases are common with papillary thyroid cancer, parapharyngeal and retropharyngeal lymph node metastases are relatively rare. Although small metastatic parapharyngeal lymph nodes (e.g. Read More

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http://dx.doi.org/10.1089/ve.2018.0141DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6961789PMC