title: Extra-adrenal pheochromocytoma: an unusual location.
abstract: A 14-year-old boy with a retrohepatic para-aortic pheochromocytoma demonstrates the potential difficulties of localization in an unusual extra-adrenal site of pheochromocytoma. Ultrasonography, computed tomography, metaiodobenzylguanidine scanning, and angiography with venous sampling failed to define the true anatomic location of this tumor. Collateral venous drainage produced confusing venous sampling data and represents a potential pitfall in the interpretation of these studies.
authors.affiliation: Department of Diagnostic Radiology, Stanford University Medical Center, CA 94305.
authors.forename: G E
authors.initials: GE
authors.lastname: Hartman
authors.forename: R
authors.initials: R
authors.lastname: Hintz
authors.forename: W
authors.initials: W
authors.lastname: Northway
authors.forename: F G
authors.initials: FG
authors.lastname: Mihm
mesh_terms: D000008:Abdominal Neoplasms / Q000473:pathology*; D000293:Adolescent; D000310:Adrenal Gland Neoplasms / Q000473:pathology; D001011:Aorta; D006801:Humans; D008099:Liver; D008297:Male; D010673:Pheochromocytoma / Q000473:pathology*