2,594 results match your criteria ethmoidal arteries

Olfactory epithelium and ontogeny of the nasal chambers in the bowhead whale (Balaena mysticetus).

Anat Rec (Hoboken) 2021 Jun 11. Epub 2021 Jun 11.

Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio, USA.

In a species of baleen whale, we identify olfactory epithelium that suggests a functional sense of smell and document the ontogeny of the surrounding olfactory anatomy. Whales must surface to breathe, thereby providing an opportunity to detect airborne odorants. Although many toothed whales (odontocetes) lack olfactory anatomy, baleen whales (mysticetes) have retained theirs. Read More

View Article and Full-Text PDF

A Rare Case of Metastases to Paranasal Sinus From Colonic Adenocarcinoma.

Cureus 2021 Apr 27;13(4):e14718. Epub 2021 Apr 27.

Medical Oncology, Tata Main Hospital, Jamshedpur, IND.

Metastases of malignant tumors to the nasal cavity and paranasal sinuses are very rare. Metastases to these locations are usually solitary and produce similar symptoms to those of a primary sinonasal tumor. Pain, nasal obstruction, and epistaxis are the most common symptoms. Read More

View Article and Full-Text PDF

Anatomic Variations of Ethmoid Roof and Risk of Skull Base Injury in Endoscopic Sinus Surgery: Statistical Correlations.

Am J Rhinol Allergy 2021 May 26:19458924211020549. Epub 2021 May 26.

Department of Otorhinolaryngology, University of Turin, San Luigi Gonzaga Hospital, Orbassano, Italy.

Background: Recent developments in endoscopic sinus surgery (ESS) have increased the need to investigate the complex anatomic variations in the ethmoid roof and skull base, to inform the surgeon about the risk of damaging these crucial areas during ESS.

Objective: To offer a detailed description of sinus anatomy focusing on the key surgical landmarks in ESS and frontal recess surgery to standardize a systematic approach during the preoperative sinuses imaging evaluation. A total of 220 computed tomography (CT) scans were reviewed to obtain six sets of measurements: the depth of the cribriform plate (CP); the length of the lateral lamella of the cribriform plate (LLCP); the angle formed by the LLCP and the continuation of the horizontal plane passing through the CP; the position of the anterior ethmoidal artery (AEA) at the skull base; the extent of frontal sinus pneumatization (FSP); the type of superior attachment of the uncinate process (SAUP). Read More

View Article and Full-Text PDF

gen. et sp. nov., a new hybodontiform shark-like chondrichthyan from the Upper Jurassic Kimmeridge Clay Formation of England.

PeerJ 2021 11;9:e11362. Epub 2021 May 11.

Department of Palaeontology, University of Vienna, Vienna, Austria.

A partial skeleton of a hybodontiform shark-like chondrichthyan from the Upper Jurassic Kimmeridge Clay Formation of Dorset, England, is described and designated as a new genus and species, gen. et sp. nov. Read More

View Article and Full-Text PDF

3D endoscopic endonasal craniectomy for intestinal type adeno-carcinoma (ITAC) of the nasal cavity.

Am J Otolaryngol 2021 Jul-Aug;42(4):103061. Epub 2021 Apr 19.

U.O.C di Otorinolaringoiatria ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy.

Background: The aim of this study was to describe the potential advantages of the 3D endoscope-assisted craniectomy for tumor of the nasal cavity.

Methods: A 77-year-old man with a 6 month history of persistent progressive right nasal obstruction and iposmia is reported. Physical examination, including nasal endoscopy, revealed a large mass within the right nasal cavity. Read More

View Article and Full-Text PDF

Sinusitis of actinomycosis infection : a case report.

J Med Invest 2021 ;68(1.2):202-204

Department of Otorhinolaryngology-Head and Neck Surgery.

Actinomycosis is an infection caused by anaerobic bacteria, primarily from the genus Actinomyces, which normally colonize the several regions including the mouth. Disruption of mucosa may lead to infection of virtually any site, but reports of involvement of the sinuses are rare. We report a case of an actinomycosis infection in the unilateral maxillary sinus. Read More

View Article and Full-Text PDF
January 2021

Type 2 persistent primitive olfactory artery associated with bilateral ophthalmic arteries arising from the middle meningeal arteries diagnosed by magnetic resonance angiography.

Surg Radiol Anat 2021 May 13. Epub 2021 May 13.

Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Hidaka, Japan.

Persistent primitive olfactory artery (PPOA) is a relatively rare variation of the proximal anterior cerebral artery (ACA). Traditionally, there are two types: Type 1 is a common type, which generally follows an anteroinferior course and which takes a hairpin turn before continuing to the A2 segment of the ACA. Type 2 is an extremely rare variation that continues to the anterior ethmoidal artery without a hairpin turn. Read More

View Article and Full-Text PDF

Next-Generation Sequencing-Based Decision Support for Intensivists in Difficult-to-Diagnose Disease States: A Case Report of Invasive Cerebral Aspergillosis.

A A Pract 2021 May 6;15(5):e01447. Epub 2021 May 6.

From the Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany.

Aspergillus spp. are widespread environmental pathogens that can induce invasive aspergillosis, especially in immunocompromised patients. An 86-year-old female patient presented with a rare case of invasive cerebral aspergillosis. Read More

View Article and Full-Text PDF

Ethmoidal labyrinth hemorrhage: a novel complement autopsy finding in fatal neck compression.

Int J Legal Med 2021 Jul 2;135(4):1559-1562. Epub 2021 May 2.

Department of Forensic Medicine, Jessenius Faculty of Medicine, Comenius University, 036 59, Martin, European Union, Slovakia.

View Article and Full-Text PDF

Bilateral Sinonasal Inverted Papilloma: Report of an Uncommon Case Involving Sinuses of the Face and Orbital Cavity.

Am J Case Rep 2021 May 2;22:e929910. Epub 2021 May 2.

Department of Oral Pathology, School of Dentistry, Federal University of Pará, Belém, PA, Brazil.

BACKGROUND Nasosinusal papilloma is a benign aggressive tumor. It usually occurs unilaterally in the nasal cavity and can extend to the sinuses. The diagnosis is made by the correlation of findings observed in tomographic and histopathological exams. Read More

View Article and Full-Text PDF

From ethmoidal air cells to ethmoturbinal passages.

Eur Ann Otorhinolaryngol Head Neck Dis 2021 Apr 27. Epub 2021 Apr 27.

ORL et chirurgie cervico-faciale, bâtiment Louis Mathieu, hôpital de Brabois, université de Lorraine, CHRU de Nancy, allée du Morvan, 54600 Vandœuvre-lès-Nancy, France.

The concept of ethmoidal sinuses composed of ethmoidal air cells does not appear to fit with the embryological origin of the ethmoid. Post-natal formation of the paranasal sinuses, as visualized by MRI, appears to be fundamentally different from the embryological development of the ethmoid sinus. These two organs also appear to have very distinct functions: paranasal sinuses play a role in respiration and sanitization of the respiratory tract, while the ethmoid sinus plays a role in olfaction. Read More

View Article and Full-Text PDF

Concomitant Embolization and Microsurgical Resection of a Giant, Hypervascular Skull Base Meningioma: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Apr 30. Epub 2021 Apr 30.

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Some skull base tumors can be extremely hypervascular, incorporating multiple vascular territories and demonstrating arteriovenous shunting. Devascularization is a critical step undertaken early in meningioma surgery, necessary before the debulking that is required in skull base tumors. While devascularization can often be achieved with appropriate approach selection, bony drilling, and microsurgical cautery, preoperative embolization of meningiomas has an invaluable role in selected cases. Read More

View Article and Full-Text PDF

The prevalence of frontal cell variants according to the International Frontal Sinus Anatomy Classification and their associations with frontal sinusitis.

Eur Arch Otorhinolaryngol 2021 Apr 29. Epub 2021 Apr 29.

Department of Otorhinolaryngology, Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia.

Background: The International Frontal Sinus Anatomy Classification (IFAC) is introduced to simplify the classification of different frontal cell variants based on their topographical structures. The objectives of our study were to determine the prevalence of the frontal cell variants according to IFAC and their association with the development of frontal sinusitis.

Methodology: A retrospective chart review on computed tomography paranasal sinus (CTPNS) was conducted. Read More

View Article and Full-Text PDF

Very Late Presentation of Csf Rhinorrhea after 45 Years of Head Trauma: A Case Report.

Iran J Otorhinolaryngol 2021 Mar;33(115):103-106

Department of Otorhinolaryngology, Ram Lal Eye and ENT Hospital, Government Medical College, Amritsar, Punjab.

Introduction: Very late presentation of cerebrospinal fluid rhinorrhea is quite rare with some factors like brain shrinkage with age and ethmoidal growth fracture that lead to leakage from fracture site.

Case Report: We present a 70 years old man diagnosing with CSF rhinorrhea, 45 years after head injury with metallic rod. Treatment of cerebrospinal fluid leakage was performed successfully by endoscopic intranasal repair. Read More

View Article and Full-Text PDF

Clinical, anatomopathological, and immunohistochemical findings of a transitional cell carcinoma from nasal cavity, frontal and ethmoidal sinus with meningoencephalic invasion in a dog.

Open Vet J 2021 Jan-Mar;11(1):1-5. Epub 2021 Jan 3.

Department of Veterinary Medicine, University of Vila Velha, Vila Velha, Brazil.

Background: Primary neoplasms of the nasal cavity and sinuses are uncommon in domestic animals, most of which are of epithelial origin, being adenocarcinoma the most common tumor diagnosed in this region. Some malignant nasal cavity neoplasms may invade the brain causing clinical neurological signs, as well as purulent nasal secretion and epistaxis.

Case Description: A case of neoplasm is reported in a 14-year-old pincher presenting dyspnea, epistaxis, and neurological alterations. Read More

View Article and Full-Text PDF
January 2021

Long Term Outcomes of Nasoseptal Perforation Repair With an Anterior Ethmoidal Artery Flap.

Am J Rhinol Allergy 2021 Apr 20:19458924211012120. Epub 2021 Apr 20.

Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.

Background: Nasoseptal perforation repair is a challenging condition with no standard technique for repair recognized.

Methods: A case series of consecutive patients who underwent nasoseptal perforation repair with an anterior ethmoidal artery flap was conducted. Demographic data, preoperative features of the perforation and postoperative outcomes were analyzed. Read More

View Article and Full-Text PDF

Comparison of Magnetic Resonance Imaging and Computed Tomography in the Evaluation of the Olfactory Cleft and Ethmoidal Cells.

J Craniofac Surg 2021 Apr 5. Epub 2021 Apr 5.

Department of Otolaryngology, Head and Neck Surgery, Tohoku University School of Medicine Department of Otolaryngology, Tohoku Kosai Hospital, Sendai Department of Otolaryngology, Iwate Prefectural Iwai Hospital, Ichinoseki, Iwate, Japan.

Abstract: No study has examined whether magnetic resonance imaging (MRI) alone can be used for evaluating olfactory cleft and ethmoidal sinus in patients with olfactory disorders. Therefore, we analyzed the discrepancies between computed tomography (CT) and MRI in the imaging of the olfactory cleft and ethmoidal sinus. Patients who underwent CT and MRI within 30 days were evaluated. Read More

View Article and Full-Text PDF

Polymorphous Adenocarcinoma: A Rare Case Report with Unique Radiographic Appearance on CBCT.

Case Rep Dent 2021 24;2021:8853649. Epub 2021 Mar 24.

Dept. of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka 576104, India.

Background: Polymorphous low-grade adenocarcinoma (PLGA) is a slow growing malignant tumor of minor salivary glands and is generally of indolent nature. However, according to the most recent WHO Classification of Salivary Gland Tumors (2017), the cancer is classified as Polymorphous AdenoCarcinoma (PAC). PAC presents as a less aggressive tumor, though it could on rare occasions demonstrate distant metastasis. Read More

View Article and Full-Text PDF

Multiple Approaches for Managing Complex Ophthalmic Blunt Trauma: A Case Report.

Int Med Case Rep J 2021 31;14:205-210. Epub 2021 Mar 31.

Division of Plastic Reconstruction, Department of Ear, Nose and Throat, Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia.

Introduction: Ophthalmic trauma is defined as injuries affecting the ocular structures, including the globe, eyelid, lacrimal system, and surrounding orbital walls. Blunt trauma acts as the leading cause of injury and it may affect both the anterior and posterior parts of the globe. Prompt diagnosis, early management, and sustained follow-up are mandatory for an optimal outcome. Read More

View Article and Full-Text PDF

A cadaveric study investigating the anatomy of the medial orbital wall.

Anat Cell Biol 2021 Apr 8. Epub 2021 Apr 8.

Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX, USA.

The purpose of this study is to investigate the applicability of the current surgical guideline, known as '24-12-6' surgical guideline, in the Hispanic and European populations. This guideline is used during numerous orbital surgeries and states that the distance between the anterior lacrimal crest (ALC) to the anterior ethmoidal foramen (AEF) (24 mm), the AEF to the posterior ethmoidal foramen (PEF) (12 mm), and the PEF to the optic canal (OC) (6 mm) follows a Rule of Halves. Previous studies suggest this surgical guideline is not applicable for all ethnicities; however, to our knowledge, no data has been published regarding the accuracy of this guideline pertaining to the Hispanic population. Read More

View Article and Full-Text PDF

Efficacy and safety of an artificial dermal graft for the reconstruction of exenterated sockets: a preliminary report.

Graefes Arch Clin Exp Ophthalmol 2021 Mar 26. Epub 2021 Mar 26.

Ophthalmology Department, University Hospital of Nice, Nice, France.

Purpose: The purpose of this study is to report our experience with the use of artificial dermis grafts for orbital socket reconstruction following orbital exenteration (OE).

Method: A retrospective study was conducted in our ocular oncology centre from May 2018 to June 2020 in patients undergoing OE for orbital malignancies in whom an artificial dermis device (Integra® template, 2 layers) was used for reconstruction. Data recorded included demographics, previous and adjuvant treatments, aetiologies, surgical procedure, surgical reconstruction, complications and follow-up. Read More

View Article and Full-Text PDF

Dural arteriovenous fistula with crista galli erosion in a patient with suspected sinusitis.

Radiol Case Rep 2021 May 25;16(5):1028-1031. Epub 2021 Feb 25.

Department of Neurological Surgery, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba, 279-0021, Japan.

Dural arteriovenous fistula (dAVF) of the anterior cranial fossa is an aggressive entity with a high risk of intracranial hemorrhage. A 38-year-old woman presented to our institution with nasal obstruction and discharge. Computed tomography (CT) scans performed for suspected sinusitis revealed erosion of the crista galli predominantly on the left side. Read More

View Article and Full-Text PDF

RREB1-MKL2 fusion in a spindle cell sinonasal sarcoma: biphenotypic sinonasal sarcoma or ectomesenchymal chondromyxoid tumor in an unusual site?

Genes Chromosomes Cancer 2021 Aug 10;60(8):565-570. Epub 2021 Apr 10.

Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.

Biphenotypic sinonasal sarcoma (BSNS) is a rare, low grade spindle cell sarcoma, recently recognized in the WHO classification of head and neck tumors, which is characterized by a dual myogenic and neural differentiation and recurrent gene fusions, often involving PAX3-MAML3, and less commonly PAX3 fusions with other partners such as NCOA1, NCOA2, or WWTR1. Yet, in about 4% of tumors no gene rearrangements are identified. Herein, we describe a RREB1-MKL2 fusion in a BSNS lesion occurring in a 73-year-old female patient with a right maxillo-ethmoidal angle lesion. Read More

View Article and Full-Text PDF

Long-term experiences by using modified facial degloving technique

Orv Hetil 2021 03 7;162(10):392-398. Epub 2021 Mar 7.

1 Szegedi Tudományegyetem, Általános Orvostudományi Kar, Fül-Orr-Gégészeti és Fej-Nyaksebészeti Klinika, Szeged, Tisza Lajos krt. 111., 6725.

Összefoglaló. Bevezetés: Az orrmelléküreg-daganatok kezelésében a legfrissebb nemzetközi ajánlások alapján továbbra is a sebészi reszekció az elsődlegesen választandó módszer. Bár az endoszkópos technikák fejlődésével a külső feltárással járó műtétek bizonyos esetekben háttérbe szorultak, napjainkban még mindig a Weber-Fergusson-féle metszést tartják a legszélesebb feltárást biztosító technikának, annak ellenére is, hogy a módszer stigmatizáló hegeket és deformitásokat hagy a páciensek arcán. Read More

View Article and Full-Text PDF

Innovative Surgical Techniques for Nasal Septal Perforations: Management and Treatment.

Curr Allergy Asthma Rep 2021 Mar 5;21(3):17. Epub 2021 Mar 5.

Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.

Purpose Of Review: The aim of this study was to review and describe the main innovative surgical techniques for nasal septal perforation (NSP) repair that have been published in recent years.

Recent Findings: Several techniques for NSP repair have been developed recently. The anterior ethmoidal artery (AEA) flap is a versatile technique for middle-size perforations in different locations. Read More

View Article and Full-Text PDF

Alveolar rhabdomyosarcoma metastatic to the brain.

BMJ Case Rep 2021 Mar 4;14(3). Epub 2021 Mar 4.

Radiology, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico.

Alveolar rhabdomyosarcoma (ARMS) has a predilection for the peripheral extremities, and brain metastases are rare, with only a few cases reported after the initial diagnosis. We present a 22-year-old male patient with a right orbital-ethmoidal ARMS who presented with a recurrence to the brain 1 year after the initial diagnosis. He was referred to our institution due to acute neurological deterioration. Read More

View Article and Full-Text PDF

Bilateral Ethmoidal Mucocele Causing Proptosis in a Child.

J Craniofac Surg 2021 Jan 12. Epub 2021 Jan 12.

Istanbul Faculty of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Istanbul University, Istanbul, Turkey.

Objectives: Paranasal sinus mucocele is a benign cystic lesion, lined with respiratory epithelium and filled with mucoid secretions, which is generally seen in the ethmoid or frontal sinuses. Inflammation, trauma, fibrosis, neoplasm, and previous surgery play a role in etiology. Treatment of this condition requires marsupialization and drainage. Read More

View Article and Full-Text PDF
January 2021

A foreign body lodged in the ethmoid sinus 3 years previously: A case report.

Int J Surg Case Rep 2021 Mar 3;80:105616. Epub 2021 Feb 3.

University Hospital Center Mohamed VI Oujda, Morocco; Faculty of Medicine and Pharmacy Oujda, Morocco.

Introduction And Importance: Ethmoid sinus foreign body is a rare condition. We describe an unusual case of an intra-ethmoid foreign body that was diagnosed late, we have reported this case to makeover fellow readers aware of the need to carefully examine the patient victim of a road traffic accident and the imaging performed.

Case Presentation: A radio-opaque foreign body was detected at CT- scan of a 70- year-old man, who was the victim of a road traffic accident three years previously. Read More

View Article and Full-Text PDF

Granulomatosis with Polyangiitis Presenting with Bilateral Orbital Apex Syndrome.

Case Rep Ophthalmol 2021 Jan-Apr;12(1):32-40. Epub 2021 Jan 7.

Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

We report a rare case of granulomatosis with polyangiitis (GPA) presenting with bilateral orbital apex syndrome (OAS). A 73-year-old woman with a history of endoscopic sinus surgery for ethmoidal sinusitis experienced a sudden decrease in visual acuity (VA) of both eyes. At the initial examination, her VA had decreased to 0. Read More

View Article and Full-Text PDF
January 2021

CSF Oculorrhea Presenting as "Tearing" following the Repair of Fronto-Ethmoidal Encephalocele.

Pediatr Neurosurg 2021 15;56(1):67-72. Epub 2021 Feb 15.

Department of Anesthesia, All India Institute of Medical Sciences, Rishikesh, India.

Introduction: Cerebrospinal fluid (CSF) oculorrhea is extremely rare, and very few cases have been reported mostly following trauma. There is only 1 case in the published literature where oculorrhea occurred following the repair of fronto-nasal encephalocele.

Case Description: A six-year-old girl presented with gradually increasing fronto-ethmoidal encephalocele with secondary papulo-nodular changes. Read More

View Article and Full-Text PDF
February 2021