Schwannomas are benign encapsulated tumors of Schwann cells, the main peripheral glia cells. The majority of schwannomas arise spontaneously and account for 8% of intracranial tumors. Those involving the cerebellopontine angle are schwannomas in 90% of cases. A case is presented of the loss of heterozygosity of the adenomatous polyposis coli (APC) gene in a female patient with cranial schwannom...

Schwannomas are benign tumors arising from the peripheral nerve sheath, commonly occurring in the head, neck, and extensor surfaces of the extremities. They can be associated with neurofibromatosis type II. Our case describes a 48-year-old woman with a 2-week history of a left-sided palpable breast mass. She was referred to radiology, where additional imaging revealed a 1.1-cm mass. A biopsy wa...

Schwannomas are usually characterized by a mass that displays rapid and intense contrast enhancement on computed tomography (CT) and magnetic resonance (MR) imaging. Although some cases are associated with cyst formation, a solid component is nearly always visualized. Schwannomas can be associated with any nerve. Schwannomas of the ninth, 1Oth, and 11th cranial nerves, also called neurinomas of...

Schwannomatosis or neurilemmomatosis has been used to describe patients with multiple nonvestibular schwannomas with no other stigmata of neurofibromatosis type-2 (NF-2). In our case, schwannomatosis, multiple schwannomas were present in a 21-yr-old woman with no stigmata or family history of NF-1 or NF-2. She had no evidence of vestibular schwannoma or other intracranial tumors. Multiple perip...

Totally cystic intradural extramedullary lesions are uncommon and form a different spectrum of conditions as compared to the commonly seen intradural extramedullary tumors. Spinal schwannomas are benign tumors arising from spinal nerve root sheaths and are the most common intradural extramedullary spinal tumors. Though cystic changes in schwannomas are well described, most spinal schwannomas ar...

Introduction. Schwannomas are rare benign tumors of the gastrointestinal tract. Despite differences in features schwannomas located stomach as opposed to peripheral or soft tissue schwannomas, their immunohistochemical characteristics same. We present a case 14-month-old boy with gastric tumor who underwent combined laparoscopic-endoscopic resection surgery, followed by schwannoma diagnosis. Ca...

Intraparenchymal schwannomas of the CNS are extremely rare. Between 1979 and 1993 400 cases of intracranial schwannomas were operated on and among them were eight patients with intraparenchymal schwannomas comprising 2% of intracranial benign nerve sheath tumours. Four of them were located in the cerebral hemispheres and two each in the brain stem and in the cerebellum. In two cases, there was ...