title: Pheochromocytoma growing exophytically from the right adrenal gland and invaginating into the liver.
abstract: A 5-cm pheochromocytoma located in segment 7 of the liver was found incidentally in a 45-year-old man with mild diabetes mellitus and hypertension, and resected. The tumor was demonstrated by computed tomography and magnetic resonance imaging to have completely invaginated itself into the liver and to be receiving blood from a dilated right hepatic artery alone. Surgery revealed the hepatic mass to be tightly adherent to the right adrenal gland. The histopathologic diagnosis was pheochromocytoma growing exophytically from the right adrenal gland. There was no association with multiple endocrine neoplasia type 1 and type 2. A postoperative 131I metaiodobenzylguanidine scan revealed no accumulation, and the patient is currently doing well without recurrence or hypertension one year after the operation. A pheochromocytoma deeply invaginating into the liver should be considered in the differential diagnosis of primary hypervascular hepatic tumors.
authors.affiliation: Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Ueda
authors.forename: K
authors.initials: K
authors.lastname: Takayasu
authors.forename: Y
authors.initials: Y
authors.lastname: Muramatsu
authors.forename: R
authors.initials: R
authors.lastname: Iwata
authors.forename: T
authors.initials: T
authors.lastname: Kosuge
authors.forename: M
authors.initials: M
authors.lastname: Sakamoto
authors.forename: M
authors.initials: M
authors.lastname: Satake
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis / Q000473:pathology*; D048909:Diabetes Complications; D003937:Diagnosis, Differential; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D006973:Hypertension / Q000150:complications; D008113:Liver Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D010673:Pheochromocytoma / Q000175:diagnosis / Q000473:pathology*; D014057:Tomography, X-Ray Computed