Boeck's Sarcoid Simulating a Brain Tumor

Introduction  Invasion of the nervous system by Boeck's sarcoid occurs not infrequently. Most commonly the peripheral and cranial nerves are affected.² The central nervous system is less frequently involved. When it is involved, it may be invaded by a diffuse granulomatous leptomeningitis, most commonly at the base of the brain,^11,14 or the disease may occur as a diffuse perivascular infiltration within the brain substance,¹¹ or, rarely, the picture may be that of an acute or a chronic meningoencephalitis.⁹ Not uncommonly, sarcoid lesions may invade the pituitary gland, giving rise to diabetes insipidus.^10,14 The following case is of interest in that it presented a clinical picture of a brain tumor, and at craniotomy a granulomatous mass, resembling a meningioma, was found.

Report of a Case  The patient, a 39-year-old Negro male office worker, was born in New York City of British West Indian parentage. He had