title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 21-1981.
mesh_terms: D000236:Adenoma / Q000175:diagnosis / Q000473:pathology*; D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010282:Parathyroid Neoplasms / Q000175:diagnosis / Q000473:pathology*; D013950:Thymus Gland / Q000473:pathology*