Long-Term Outcome of Spinal Extranodal Rosai-Dorfman Disease: A Report of Two Cases and Systematic Review.

Background: Rosai-Dorfman disease (RDD) is a rare pathologic entity caused by sinus histiocytosis with massive cervical lymphadenopathy. Isolated spinal involvement is an infrequent presentation of extranodal RDD. The clinical and radiologic appearance of RDD represents a diagnostic challenge.

Endolymphatic sac tumor at the cerebellopontine angle: A case report and review of literature.

Introduction: Endolymphatic sac tumors may present as sporadic or may be associated with Von Hippel-Lindau disease. Patients generally present with hearing loss, tinnitus and vertigo. The tumor is highly vascular which may lead to erosion of the adjacent bony and vascular structures, resulting in heavy bleeding during surgery.