To present a rare case of a cystic giant schwannoma of the sacrum mimicking aneurysmal bone cyst (ABC). A 54-year-old man visited our institute complaining left leg weakness and sensory change for several years. Magnetic resonance imaging revealed a large multilocular cystic mass with canal invasion and bone erosion confined to left S1 body. The lesion showed multiple septal enhancement without...

Intraorbital schwannoma is a rare tumor which accounts for about 1-2% of all neoplasms of the orbit. Orbital schwannomas most commonly arise from the sensory branches of the trigeminal nerve. On the other hand, intraorbital abducens nerve schwannomas are extremely rare, with a search of the English literature identifying only four cases of intraorbital abducens nerve schwannoma. This is the 5th...

The NF2 gene encodes the tumour suppressor protein merlin. The mutation of a single allele of this gene causes the autosomal dominantly inherited disease neurofibromatosis type 2 (NF2), which is characterized mainly by vestibular schwannoma carrying a second hit mutation. Complete lack of merlin is also found in spontaneous schwannomas and meningiomas. As the events leading to schwannoma develo...

Introduction. Patients must be fully informed about their disease, different variants of the treatment complications and prognosis to make decisions accept treatment. The most important they should able remember this information. aim study was studying level learned information by patients upcoming surgery “removal vestibular schwannoma”. Materials methods. 44 with schwannoma were included in p...

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schwannomas are benign nerve sheath tumors that originate from any anatomical site. most of the schwannomas are found in the head, neck or limbs. schwannoma arising in a lymph node is extremely rare. we have found only four cases in the review of the literature. we experienced a case of intranodal schwannoma in a perigastric lymph node. a 72 year-old female underwent cholecystectomy due to clin...

Background: Schwannomas are the most common extramedullary spinal tumors. The acute hemorrhagic onset of a spinal schwannoma is a rare occurrence. Case report: We report the case of a 32-year-old woman who presents with acute onset of quadriparesis due to a hemorrhagic intradural schwannoma. The tumor arose from left C1-C2 roots and extended downward from C1 to C5 vertebral levels. An emergency...

In this paper, we report a case of bilobed schwannoma, presented in the roof of orbit arising from supraorbital nerve. A 62-year male presented with a nontender mass in superior part of orbit and eccentric proptosis. Visual acuity and rest of ocular examination were normal. CT scan and MRI orbit revealed an extraconal homogenous bilobed mass, of size 3.5 to 2.5 cms in roof of orbit. Fine needle...

Schwannoma of the larynx is a rare entity, accounting for less than 0.1% of all benign laryngeal neoplasms. In particular, schwannoma of the epiglottis is much more rare. We report a case of schwannoma located on the laryngeal surface of the epiglottis which mimicked epiglottic cyst. A 39-year-old female presented with a 5-month history of dry cough. Laryngostroboscopy examination revealed a sm...

Schwannoma is the most common neurogenic tumor that is derived from the peripheral nerve sheath. There are no specific serologic markers or characteristic imaging abnormalities associated with schwannoma. Tissue diagnosis and immunohistochemistry are required to diagnose this lesion. We describe a 65-year-old male with a finding of three mass lesions in the superior and middle mediastinum on co...