Background: Infraorbital schwannoma is a benign tumor of the peripheral nerve seath composed of Schwann cells. Usually occurs between 20 and 70 years of age, are usually asymptomatic and can cause progressive, painless proptosis during growth.
Clinical Case: A 32-year-old male admitted to ophthalmologic hospital with a painless, slowly progressive mass above the left lacrimal sac. At the ophthalmologic examination the tumor had a rubbery consistency and was firmly attached to the surrounding structures. The transillumination was negative. The B mode ultrasound disclosed a phakic eye as well as an infraorbital well-circumscribed homogeneous mass with a largest diameter of 19.7 mm, without involvement of the lacrimal pathway. The A mode ultrasound showed medium-high reflectivity with small internal vascularity. The computed tomography showed a homogeneous wellcircumscribed solid mass anterior and inferior to the left globe without bony erosion. Through subdermic incision the mass was excised. The histopathological diagnosis was "Infraorbital schwannoma".
Conclusions: The schwannoma is a rare benign tumor in the orbit, few cases have been reported. The definitive diagnosis is made by histopathologic findings as the presence of a true capsule, hyper-and hypocellular areas, thickening and hyalinization of the vessel walls. When these findings are not be confused with benign fusocellular tumors. We report a new case of infraorbital schwannoma and compared it with those cases previously reported.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Pediatric Infraorbital Nerve schwannoma-A Rare Case Report.
Indian J Otolaryngol Head Neck Surg
September 2023
Patna Medical College and Hospital, Patna, India.
Infraorbital nerve schwannoma is an infrequent entity that is rarely reported in the paediatric population. This case report is a summed-up report of this infrequent diagnosis, its presentation, and management from an otorhinolaryngologist's perspective. It is reported here for its rarity, inherent surgical challenge, and academic interest.
View Article and Find Full Text PDF[Schwannoma originating from the branch of the inferior oblique muscle innervated by the oculomotor nerve: a report of two cases].
Zhonghua Yan Ke Za Zhi
December 2022
Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China.
Patient 1 was a 44-year-old female with a progressively enlarging orbital mass on the right side for 2 years, while patient 2 was a 25-year-old female who complained of protrusion of the right eye for 2 months. Both patients presented with exophthalmos and a palpable infraorbital mass without vision loss. Magnetic resonance imaging examination showed a well circumscribed circular orbital lesion, with hypointensity on T1 weighted image and heterogeneous hyperintensity on T2 weighted image, which could be significantly enhanced, in either eye.
View Article and Find Full Text PDFAs a benign isolated and encapsulated tumor originating from the nerve sheaths, schwannomas rarely appear on the cranial nerves, among which infraorbital nerve schwannomas are highly uncommon. We report a case of isolated infraorbital nerve schwannoma in a 58-year-old male patient with a clinical manifestation of proptosis in the affected eye.
View Article and Find Full Text PDFRepeat single-fraction stereotactic radiosurgery for recurrent vestibular schwannoma.
Rep Pract Oncol Radiother
September 2022
Department of Neurosurgery, University of Florida College of Medicine, Gainesville, FL, United States.
Background: Data are scarce on the efficacy of a second radiosurgery (SRS) treatment of vestibular schwannoma that has progressed following initial treatment with SRS. We sought to report the outcome of our repeat SRS series with long-term imaging follow-up.
Materials And Methods: We retrospectively analyzed 6 patients who met the following criteria: Repeat SRS at our institution between 1995 and 2018; solitary unilateral tumor; no evidence of neurofibromatosis; and magnetic resonance (MR) planning for both SRS treatments.
Endoscopic Endonasal Surgery for Resection of a Pterygopalatine Fossa Malignant Peripheral Nerve Sheath Tumor: 2-Dimensional Operative Video.
World Neurosurg
June 2021
Department of Neurological Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom. Electronic address:
The pterygopalatine fossa (PPF) is an inverted, pyramid-shaped space immediately behind the posterior wall of the maxillary sinus, and lesions arising here include juvenile angiofibromas, schwannomas, and, in exceptionally rare cases, malignant peripheral nerve sheath tumors. Surgical access to the PPF is challenging and has been historically achieved via an open transmaxillary approach associated with facial scaring/deformity as well as potential injury to facial and infraorbital nerve branches. We present the case of a 67-year-old woman with facial numbness secondary to a presumed trigeminal schwannoma in the right PPF on magnetic resonance imaging.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!