title: Obstruction of the abdominal aorta by a primary retroperitoneal tumor.
abstract: An angiographically demonstrated case of total occlusion of the abdominal aorta by a malignant retroperitoneal tumor is presented. Surgical exploration revealed a diffuse tumor of the retroperitoneum involving the wall and lumen of the abdominal aorta and vena cava, respectively. Histologic and ultrastructural evaluation of the tumor established a diagnosis of malignant fibrous histiocytoma. Total occlusion of the abdominal aorta thus represents another angiographic finding in retroperitoneal tumors.
mesh_terms: D001012:Aorta, Abdominal; D001018:Aortic Diseases / Q000209:etiology*; D018219:Histiocytoma, Benign Fibrous / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000150:complications* / Q000473:pathology