Schwannoma(neurilemmoma) is a benign tumor originates from Schwann cells. Ancient (degenerated) schwannoma is a long-standing schwannoma with degenerative changes. Head and neck region is one of the most common sites for nerve sheath tumors but intraosseous schwannoma is rare. The mandible is the most common site of occurrence for this lesion. We report a rare case of intraosseous ancient sc...

A dumb-bell mediastinal melanotic schwannoma is described, and the rarity of this type of tumour emphasised. The tumour was resected by simultaneous laminectomy and posterior thoracotomy. The patient is well four years after operation. The pathology of the tumour is described and the origin of melanotic cells is discussed.

Background: Schwannoma is a peripheral nerve sheath tumor originating from schwann cells. It is the most common neurogenic tumor of the posterior mediastinum. Pleural effusion is a rare presentation of benign schwannoma and it is mainly related to malignant tumors. Histologically, schwannoma as well as solitary fibrous tumor should be considered as a differential diagnosis of spindle cell lesio...

  Tongue base lesions have a diverse and extensive etiology. One of the benign tongue base lesions is schwannoma. Schwannoma and neurofibroma are two tumors of the peripheral nerves originating in the nerve sheaths. Schwannoma account for just over 1% of benign tumors which have been reported in the ora...

Schwannoma is rare in pelvis. Ancient schwannoma is rarer histological subtype of schwannoma. We report a very rare case of pelvic schwannoma presenting with right sciatica and right iliac fossa pain. Clinical and imaging findings were suggestive of Peritoneal Hydatid cyst. The tumour was resected completely with marked clinical improvement. Histopathological examination showed Ancient cystic s...

Schwannoma of the hypoglossal nerve is an uncommon benign neoplasm. We present a 49-year-old female patient with hypoglossal schwannoma presenting as a painless mass in the submandibular area.

Schwannoma, or neurilemmoma, is a benign neoplasm that arises from Schwann cells, which surround peripheral, cranial, and autonomic nerve sheaths. Schwannoma has been reported to occur mainly as singular lesion of the sacral sciatic in young adults. Plexiform schwannoma, subtype rare known account for 2% 5% total schwannomas. upper extremities relatively mostly ulnar nerve. We report, with lite...

OBJECTIVES/HYPOTHESIS The purpose of this study was to evaluate the Ras GTPase (Ras) to extracellular signal-regulated kinase (ERK) pathway in vestibular schwannoma (VS) cell cultures and patient excised schwannoma tumors. Mitogen-activated protein kinase kinase (MEK) inhibitor CI-1040 (PD184352) was utilized to evaluate the effect of specific MEK inhibition on benign schwannoma cell culture pr...

background: intraoral radiographies are the most frequent x-ray examinations in humans. according to international commission on radiation protection (icrp) recommendations, the selection of a diagnostic reference level (drl) should be specific to a country or region. critica l organs such as thyroid gland are exposed to x-rays in intraoral radiography and these exposures should be kept as low ...