Abstract
Idiopathic brain stone (Averback, 1977), or intracranial pathologically calcified lesion with unknown etiology, is very rare. A case of idiopathic brain stone in the cerebellum is reported. The patient, a 28-year-old female, was admitted because of sudden onset of severe vertigo and nausea. Plain computed tomography scan revealed a spotty high density area at the right dentate nucleus of the cerebellum which was not enhanced by contrast media. Vertebral angiography did not show any stain or abnormal vasculatures even with a prolonged injection method. Surgery was performed with the aide of sector scanning ultrasonography. The surgical specimen showed scattered calcium deposits without any vascular or neoplastic component.
