Schwannoma is a rare benign neural neoplasm derived from Schwann cells of the peripheral nerve sheath. Schwannoma accounts for 25% to 48% of all neoplasm cases in the head and neck region. Oral Schwannoma is an uncommon soft tissue tumor comprising of 1% of all Schwannomas. Tongue is the most common location for oral schwannoma. Occurrence of gingival schwannoma is very rare and less than 10 ca...

Schwannomas are encapsulated, benign, slowly growing tumors arising from Schwann cells of peripheral nerve sheath. Although they represent the commonest benign peripheral nerve sheath tumors, the occurrence on the lower limbs and especially from the superficial peroneal nerve is exceptionally rare. We present the clinical manifestations and imaging findings of a superficial nerve Schwannoma pre...

Ancient Schwannoma, though benign, can cause diagnostic dilemma because of its clinical presentation and imaging features. We report the management of a giant retroperitoneal schwannoma in a 19-year-old young lady who presented with lower abdominal distension. CT scan reported a large heterogenous lesion in the abdominopelvic retroperitoneum (42 cm × 16 cm × 16 cm) as a malignant tumor. The uni...

Ancient schwannomas are benign long standing schwannomas of the neural sheaths. Histological findings are these seen as in conventional schwannomas, but ancient schwannomas additionally demonstrate cystic hemorrhagic changes and degenerative nuclei with pleomorphism and hyperchromasia. Due to the nuclear atypia, and cystic degeneration, ancient schwannomas might be confused with malignant tumor...

©2017 by Anais Brasileiros de Dermatologia Dear Editor, Lichen planus pigmentosus (LPP) is a rare variant of lichen planus.1 A few cases of LPP involving linear, blaschkoid, and zosteriform patterns have been reported in the literature.2-4 We herein describe a case involving a 48-year-old female patient with unilateral abdominal involvement of LPP following the lines of Blaschko. A 48-year-old ...