title: Pheochromocytoma invasion of the inferior vena cava: sonographic evaluation.
abstract: Two cases of pheochromocytoma that invaded the inferior vena cava are reported. The significance of this finding in regard to the malignant potential of the tumor and the role of sonography in the evaluation of intracaval tumor are discussed.
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis / Q000473:pathology*; D000368:Aged; D002648:Child; D006801:Humans; D008297:Male; D009361:Neoplasm Invasiveness; D010673:Pheochromocytoma / Q000175:diagnosis / Q000473:pathology*; D014463:Ultrasonography; D014682:Vena Cava, Inferior