13,961 results match your criteria Orbit Anatomy


Nasosinusal chondrosarcoma with orbito-cerebral extension.

J Surg Case Rep 2022 Jun 22;2022(6):rjac286. Epub 2022 Jun 22.

Otorhinolaryngology and Head and Neck Surgery Department, Mohammed VI University Hospital of Oujda, Oujda, Morocco.

Chondrosarcoma is a highly aggressive malignant tumor originating from cartilaginous and mesenchymal tissues. The aim of this report is to describe a rare case of nasosinusal chondrosarcoma with orbito-cerebral extension. Our patient was a 55-year-old with a right cheek swelling evolving over a year, with unilateral right nasal obstruction gradually becoming bilateral associated with hyposmia, bilateral exophthalmos, reduced bilateral deep visual acuity and permanent headaches. Read More

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Hyperostosis in orbital rhabdomyosarcoma.

BMJ Case Rep 2022 Jun 20;15(6). Epub 2022 Jun 20.

Department of Ophthalmology and Visual Sciences, Philippine General Hospital, Manila, Philippines.

Rhabdomyosarcoma is the most common soft-tissue sarcoma in paediatric patients and may arise as a primary orbital neoplasm. Imaging studies show a unilateral solitary orbital lesion. With larger tumours, erosion of the adjacent orbital walls is a common accompanying bony change. Read More

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Endodontic Management of Mandibular anterior teeth and premolars with Vertucci's Type VIII canal morphology: A Rare Case.

J Conserv Dent 2022 Mar-Apr;25(2):197-201. Epub 2022 May 4.

Undergraduate Student, Manipal College of Dental Sciences, Mangalore, Affiliated to Manipal Academy of Higher Education, Mangalore, India.

A thorough knowledge of variable and complex tooth morphology, detailed exploration of the internal anatomy and underlying pathology, proper interpretation of radiographic images, conservative access to explore all the canals, thorough debridement and disinfection of canal system, three-dimensional seal by obturation, and good coronal seal by final restoration are essential steps in the management for a successful endodontic treatment outcome. Clinical management of rare case with extra canals in the lower anterior teeth and premolars had to undergo root canal therapy has been described. Referring to the hard-tissue repository of the human dental internal morphology, carefully interpreting multiangled radiography/cone-beam computed tomography, using tools such as magnifying loupes with illumination and ultrasonics, thermoplasticized gutta-percha system to obturate, are very helpful to the clinician can achieve this goal. Read More

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Ocular metastasis of primary gynecological malignancies, a rare but not insignificant entity: A systematic review.

Niger J Clin Pract 2022 Jun;25(6):739-746

Gynecologic Oncology Unit, 1st Department of Obstetricsa and Gynecology, National and Kapodistrian University of Athens, Athens, Greece.

The genital system remains one of the most common sites of carcinogenesis in women. Advances in surgery, radiation treatment, and chemotherapy have increased their efficacy and many patients survive for many years after their initial diagnosis. The eye is a rare site of metastasis from gynecological cancer due to its distant location from the genitalia. Read More

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Infra-Temporal and Pterygo-Palatine Fossae Tumors: A Frontier in Endoscopic Endonasal Surgery-Description of the Surgical Anatomy of the Approach and Report of Illustrative Cases.

Int J Environ Res Public Health 2022 May 25;19(11). Epub 2022 May 25.

Programma Neurochirurgia Ipofisi-Pituitary Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, 40139 Bologna, Italy.

Infratemporal and pterygopalatine fossae (ITF and PPF) represent two complex paramedian skull base areas, which can be defined as jewelry boxes, containing a large number of neurovascular and osteomuscular structures of primary importance. They are in close communication with many craniofacial areas, such as nasal/paranasal sinuses, orbit, middle cranial fossa, and oral cavities. Therefore, they can be involved by tumoral, infective or inflammatory lesions spreading from these spaces. Read More

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Implications of the olfactory fossa anatomy in intracranial complications of inferomedial orbital decompression.

Orbit 2022 Jun 7:1-4. Epub 2022 Jun 7.

Department of Ophthalmology, Otorhinolaryngology, and Head and Neck Surgery, School of Medicine of Ribeirão Preto, University of Sao Paulo, Sao Paulo, Brazil.

Two patients with thyroid eye disease underwent inferomedial orbital decompression complicated by a cerebrospinal fluid (CSF) leak. One of the cases developed a postoperative pneumocephalus resolved with conservative measures. In the second case, the CSF leak was managed intraoperatively. Read More

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[Surgical Anatomy of the Cavernous Sinus, Parasellar Region, and Orbit].

Authors:
Yoshihiro Natori

No Shinkei Geka 2022 May;50(3):508-515

Department of Neurosurgery, Iizuka Hospital.

The cavernous sinus, para-sellar region, and orbit have intricately intertwined cranial nerves, blood vessels, and dura mater. In surgery, anatomical understanding is very important. Recognizing the location(depth)of the cranial nerves running on the lateral and upper wall of the cavernous sinus is vital and is directly linked to postoperative complications. Read More

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Current opinions on diagnosis and treatment of adenoid cystic carcinoma.

Oral Oncol 2022 Jul 2;130:105945. Epub 2022 Jun 2.

Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Anatomy Laboratory of Division of Nose and Cranial Base, Clinical Anatomy Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, China. Electronic address:

Adenoid cystic carcinoma (ACC) is a rare malignant tumor derived mainly from the salivary glands, representing approximately 1% of all headandneck carcinomasand 10% of all salivary gland neoplasms. ACC displays a paradoxical behavioral combination of an indolent growth pattern but an aggressive progression, with local recurrence and distant metastasis. The propensity of ACC of the head and neck (ACCHN) for perineural invasion and its anatomical location, especially if it extends to the nasal cavity and paranasal sinuses, facilitates tumor involvement in the surrounding structures, such as the orbit, pterygopalatine fossa, Meckel'scave, and cavernous sinus, which can lead to skull base involvement and intracranial extension. Read More

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Orbital Floor Blowout Fracture Reconstruction Using Moldable Polymethyl Methacrylate: A Report of Two Cases and Their Imaging Findings.

Open Access Emerg Med 2022 25;14:223-232. Epub 2022 May 25.

Department of Ophthalmology, King Fahd Hospital of the University, Imam Abdulrahman Bin Faisal University, Khobar City, Eastern Province, Saudi Arabia.

Background: Blowout fracture is defined as an internal orbital fracture that does not involve the orbital rim. This type of fracture results in the loss of tissue and disruption of the structure of the orbital wall. The symptoms and signs include pain, enophthalmos, diplopia, orbital emphysema, and ecchymosis. Read More

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Clinical and histopathological profile of primary caruncular lesions.

Indian J Ophthalmol 2022 Jun;70(6):1975-1981

Department of Ocular Pathology, Larson and Tourbo, Vision Research Foundation, Chennai, Tamil Nadu, India.

Purpose: To provide a retrospective analysis of lesions of the caruncle which have been very rarely reported in the literature.

Methods: A retrospective review of all the caruncular lesions between January 2000 and January 2020 was done at a single tertiary eye care hospital. The lesions were classified as benign and malignant lesions. Read More

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Progressive chronic calvarial osteomyelitis in rhino-orbital mucormycosis associated with COVID-19.

Orbit 2022 Jun 1:1-7. Epub 2022 Jun 1.

Division of Ophthalmology, Department of Ophthalmology, Otorhinolaryngology, and Head and Neck Surgery, School of Medicine of Ribeirão Preto - University of São Paulo, São Paulo, Brazil.

We describe two cases of extensive indolent calvarial osteomyelitis after rhino-orbital-mucormycosis in diabetic patients previously diagnosed with COVID-19. Both patients presented with acute rhino-orbital symptoms about one month after being diagnosed with COVID-19. Treatment with intravenous liposomal Amphotericin B and prompt radical surgical debridement was instituted, but calvarial osteomyelitis ensued and persisted chronically despite maintenance of antifungal therapy and partial debridement of necrotic calvarial bone. Read More

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Anatomical Changes in a Case with Asymmetrical Bilateral Maxillary Sinus Hypoplasia.

Medicina (Kaunas) 2022 Apr 20;58(5). Epub 2022 Apr 20.

Department I, Division of Anatomy, Faculty of Dental Medicine, "Carol Davila" University of Medicine and Pharmacy, RO-020021 Bucharest, Romania.

: The maxillary sinus hypoplasia (MSH) is an occasional variation of the maxilla, occurring either unilaterally or bilaterally. Previous studies dealing with MSH have not detailed the consequent anatomical changes of the maxilla and adjacent fossae. : A 58-year-old female case was scanned in Cone Beam Computed Tomography and found to have asymmetrical bilateral MSH, who was then further evaluated anatomically. Read More

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Not like night and day: the nocturnal letter-winged kite does not differ from diurnal congeners in orbit or endocast morphology.

R Soc Open Sci 2022 May 24;9(5):220135. Epub 2022 May 24.

College of Science and Engineering, Flinders University, Adelaide, SA, Australia.

Nocturnal birds display diverse adaptations of the visual system to low-light conditions. The skulls of birds reflect many of these and are used increasingly to infer nocturnality in extinct species. However, it is unclear how reliable such assessments are, particularly in cases of recent evolutionary transitions to nocturnality. Read More

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PD-L1 Inhibits T Cell-Induced Cytokines and Hyaluronan Expression the CD40-CD40L Pathway in Orbital Fibroblasts From Patients With Thyroid Associated Ophthalmopathy.

Front Immunol 2022 10;13:849480. Epub 2022 May 10.

Department of Ophthalmology, Daping Hospital, Army Medical University, Chongqing, China.

Thyroid associated ophthalmopathy (TAO), characterized by T cell infiltration and orbital fibroblast activation, is an organ-specific autoimmune disease which is still short of effective and safety therapeutic drugs. The PD-1/PD-L1 pathway has been reported hindering the progression of Graves' disease to some extent by inhibiting T cell activity, and tumor therapy with a PD-1 inhibitor caused some adverse effects similar to the symptoms of TAO. These findings suggest that the PD-1/PD-L1 pathway may be associated with the pathogenesis of TAO. Read More

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Severe Diesel Injection Injury to the Face, Neck and Orbit: Surgical Management and Critical Care Considerations.

Ophthalmic Plast Reconstr Surg 2022 May 20. Epub 2022 May 20.

Department of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado.

The purpose of this report is to discuss high-pressure injection injuries involving the face and orbit and discuss factors affecting prognosis and management as these injuries are rare and uniquely challenging to manage given the complex anatomy and extensive damage that may occur. In this case, we present severe injury to the left orbit, maxillofacial region, and neck of a 29-year-old male who suffered a high-pressure diesel injection injury requiring several surgical debridements, intensive care unit (ICU) level care, and ultimately sub-total exenteration. Initial management involved systemic antibiotics, steroids, and surgical debridement; however, our patient experienced subsequent rapid deterioration resulting in admission for more aggressive subspecialty intervention. Read More

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Ocular adnexal metastases from renal cell carcinoma: An update and comprehensive literature review.

Saudi J Ophthalmol 2021 Jul-Sep;35(3):209-216. Epub 2022 Apr 18.

Department of Pathology, Wills Eye Hospital, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA.

Purpose: The purpose of this study was to review the clinical presentation, systemic work-up, and outcomes of all previously reported ocular adnexal (OA) metastases from renal cell carcinoma (RCC).

Methods: This was a literature review. PubMed and Google Scholar databases were searched for all well-documented cases of OA metastases from RCC. Read More

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Dual ophthalmic arteries: a new case.

Surg Radiol Anat 2022 May 22;44(5):721-725. Epub 2022 May 22.

Faculty of Medicine, Department of Radiology, Hacettepe University, 06100, Ankara, Turkey.

We report one retinoblastoma patient with dual ophthalmic arteries (also known as "double ophthalmic arteries") arising from the internal carotid artery which fuse with each other inside the orbit. The caudal ophthalmic artery with larger caliber originated from the cavernous segment of internal carotid artery and passed through the superior orbital fissure. The cranial and tiny one arose more cranially from the supraclinoid internal carotid artery and passed through the optic canal. Read More

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Misdirection of a nasopharyngeal SARS-CoV-2 swab: An unexpected complication.

Otolaryngol Case Rep 2022 Sep 6;24:100439. Epub 2022 May 6.

Otolaryngology Department, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.

Background: The diagnosis of coronavirus disease (COVID-19) is based on detecting viral RNA of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the nasal cavities and the nasopharynx. Millions of nasopharyngeal swab tests are currently performed daily worldwide; complications of the procedure are uncommon, but occasionally they occur.

Case Report: We describe the case of a 79-year-old man who developed right orbital cellulitis after a nasopharyngeal swab test for SARS-CoV-2. Read More

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September 2022

Nasoethmoidal Schwannoma as a Mimicar of Esthesioneuroblastoma: A Case Report and Literature Review.

Neurol India 2022 Mar-Apr;70(2):784-787

Department of Otorhinolaryngology, Guru Gobind Singh Medical College and Hospital, Faridkot, Punjab, India.

Nasoethmoidal schwannomas are rare lesions and their presentation with intracranial extension is even rarer. Here, a patient presenting with rhinorrhea, epistaxis, and proptosis of left eye was diagnosed with giant nasoethmoidal schwannoma extending to frontal lobe and orbit, which was managed with bifrontal craniotomy with endoscopic transnasal gross total excision. This being predominantly a benign lesion has good prognosis if total excision is achieved. Read More

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Anatomical, histochemical and surface ultrastructural characteristics of cavum nasi of the common quails (Coturnix coturnix. Erlangeri).

Anat Histol Embryol 2022 May 9. Epub 2022 May 9.

Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt.

Ten normal, mature and common quails were used to study in detail the gross anatomy, histochemical and surface ultrastructural characteristics of the nasal cavity. The relationship between the structure and function of the nasal cavity also were assessed. The quail nasal cavity was divided into the vestibule, nasal cavity proper and fundus. Read More

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The forgotten lacrimal gland and lacrimal drainage apparatus: pictorial review of CT and MRI findings and differential diagnosis.

Br J Radiol 2022 Jul 19;95(1135):20211333. Epub 2022 May 19.

Department of Diagnostic Radiology, McGill University Health Centre, Montreal, Quebec, Canada.

The lacrimal gland is a bilobed serous gland located in the superolateral aspect of the orbit. Lacrimal system pathologies can be broadly divided into pathologies of the lacrimal gland and those of the nasolacrimal drainage apparatus. These include distinct congenital, infectious, inflammatory, and benign, indeterminate, and malignant neoplastic lesions. Read More

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The Primary Brain Eosinophilic Angiocentric Fibrosis, A Rare Case Report.

Prague Med Rep 2022 ;123(2):113-119

Department of Radiotherapy, Iran University of Medical Sciences, 7Tir Hospital, Tehran, Iran.

Eosinophilic angiocentric fibrosis (EAF) is a rare progressive fibrosing lesion involving the nasal cavity, paranasal sinuses, and the upper respiratory tract. There are few reports that it rarely involves the orbit; however, there is no report of intracranial involvement. Here, we report and share our experience with a rare case of primary intracranial EAF. Read More

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Is pre-operative imaging of external angular dermoid cysts in children necessary?

J Paediatr Child Health 2022 May 4. Epub 2022 May 4.

Department of Paediatric Surgery, Wellington Hospital, Wellington, New Zealand.

Aim: To investigate the frequency and modality of pre-operative imaging in children with an external angular dermoid cyst and whether this influenced subsequent management.

Methods: A retrospective study was undertaken to assess the presentation, investigation, treatment and outcomes in children aged less than 16 years with an external angular dermoid cyst. All children who underwent external angular dermoid cyst excision between January 2008 and April 2021 at a regional children's hospital were analysed. Read More

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Morphometric analysis for the sex determination of the skull of the Deltari Ilir dog (Canis lupus familiaris) of Kosovo.

Anat Histol Embryol 2022 May 3. Epub 2022 May 3.

Department of Anatomy, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey.

This study aimed to explain the sex determination of the autochthonous dog Deltari Ilir with both morphometric and geometric analysis methods. For this purpose, 24 Deltari Ilir dog skulls (12 females and 12 males) were used in the study. The difference between males and females at 6 values was statistically significant. Read More

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Routine punctoplasty: isn't it time we preserved the integrity of the punctum?

Orbit 2022 Aug 2;41(4):407-412. Epub 2022 May 2.

Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA.

Punctoplasty is a common procedure in the management of punctal stenosis and was first described by Sir William Bowman in 1853. Several types of punctoplasty are described, and include 1-snip, 2-snip, triangular 3-snip, rectangular 3-snip and 4-snip procedures. The understanding of the anatomy and physiology of the punctum has greatly improved in the last decade aided by electron microscopic and molecular techniques. Read More

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Central retinal artery delineation using magnetic resonance imaging.

Surg Radiol Anat 2022 May 2;44(5):727-732. Epub 2022 May 2.

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

Purpose: Few studies have explored the central retinal artery (CRA) using neuroimaging. Our study aimed to explore this using magnetic resonance imaging (MRI).

Methods: A total of 81 patients with intact orbital structures and visual function underwent thin-slice contrast MRI. Read More

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Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia.

BMC Anesthesiol 2022 04 30;22(1):133. Epub 2022 Apr 30.

Department of Ophthalmology, Flinders Medical Centre, Adelaide, South Australia, Australia.

Complications of peribulbar anaesthesia include retrobulbar haemorrhage, globe perforation and brainstem anaesthesia. Therefore, this study took measurements relating the proximity of medial canthus to the optic nerve and also the safe angle between orbit and globe using 200 multiplanar reconstructed computed tomography (CT) images of the orbit. The principal results show that in 1. Read More

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Was it worth migrating to the new British industrial colony of South Australia? Evidence from skeletal pathologies and historic records of a sample of 19th-century settlers.

Int J Paleopathol 2022 06 27;37:41-52. Epub 2022 Apr 27.

Biological Anthropology and Comparative Anatomy Research Unit, The University of Adelaide, Australia; Archaeology, Flinders University, Australia; Institute of Evolutionary Medicine, University of Zurich, Switzerland.

Objectives: To examine pathological evidence present in a sample of 19th -century settlers to South Australia in the context of an early industrial society.

Materials: Skeletal remains of 20 adults and 45 nonadults from the government funded burial site (free ground) of St Mary's Anglican Church Cemetery, gravestones of privately funded burials and local parish records.

Methods: Investigation of pathological manifestations of skeletal remains, church records and historic literature. Read More

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Management of Tricky Lymphoma Cases.

Klin Monbl Augenheilkd 2022 Apr 26;239(4):404-408. Epub 2022 Apr 26.

UniversitätsSpital Zürich, Department of Ophthalmology, Zürich, Switzerland.

Lymphoma lesions are frequent, but their appearance may differ. We discuss aspects that are not to be overlooked. We present seven cases (aged 40 - 93 years) with unexpected lymphoma findings, demonstrating a vast variability of history, clinic, and management. Read More

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Lacrimal gland choristomas.

Arq Bras Oftalmol 2021 10;85(2):190-199. Epub 2021 Sep 10.

Department of Ophthalmology, Cantonal Hospital Aarau, Aarau, Aargau, Switzerland.

The purpose of this article was to report a case of intraconal lacrimal gland tissue and to review the literature on lacrimal gland choristoma. The magnetic resonance imaging findings of a biopsy-proven orbital case are also presented. A PubMed database search was performed using the key terms heterotopic, ectopic, aberrant, choristoma, and lacrimal gland to identify all the previously documented studies on lacrimal gland choristoma, in English, Spanish, and French. Read More

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