title: Eosinophilic granuloma mimicking a pituitary tumor.
abstract: The authors present the case report of a patient in whom hypopituitarism, diplopia, and visual field defects were due to eosinophilic granuloma. Radiographic studies were suggestive of a pituitary tumor and subsequent histological evaluation showed replacement of the anterior pituitary by histiocytic cells. Eosinophilic granuloma should be included in the differential diagnosis of an intrasellar mass.
mesh_terms: D000328:Adult; D003951:Diagnostic Errors; D004803:Eosinophilic Granuloma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D010900:Pituitary Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010911:Pituitary Neoplasms / Q000175:diagnosis*