Rosai-Dorfman disease mimicking torculae meningioma: case report

We report the case of a woman 65 years old, complaining of headache, carries a lesion in the posterior region of the tent of the cerebellum, implanted in torcula, suggestive of meningioma by imaging tests, was subjected to neurosurgical procedures for resection. When pathological examination suggested a diagnosis of Rosai-Dorfman disease, confirmed by immunohistochemistry. It is a rare proliferative histiocytic lymphadenopathy in benign behavior, with more frequent involvement of cervical lymph node and other extranodal sites, its location is extremely rare in the central nervous system, especially in the posterior fossa without involvement of other anatomical structures.