title: Venous tumor thrombosis and cavernous transformation of the portal vein in a patient with gastric carcinoma.
abstract: A case of extensive extra- and intrahepatic portal tumor thrombosis, with no metastatic foci in liver parenchyma, secondary to advanced gastric carcinoma in a 69-year-old man is reported. The portal tumor thrombosis was characterized by enlargement of the thrombosed segment of the vein, decreased density mass without intraluminal enhancement of the involved vein, nonvisualization of the portal venous branch in the involved lobe, and the so-called cavernous transformation of the portal vein. The surgically resected gastric specimen showed Borrmann type 3 advanced papillary adenocarcinoma. The portal tumor thrombus is presumed to have arisen from vascular invasion in the primary foci of gastric carcinoma, and then to have permeated the portal vein without invasion of liver parenchyma.
authors.affiliation: Department of Internal Medicine, University of Tsukuba, Ibaraki, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ishikawa
authors.forename: S
authors.initials: S
authors.lastname: Koyama
authors.forename: T
authors.initials: T
authors.lastname: Ikegami
authors.forename: H
authors.initials: H
authors.lastname: Fukutomi
authors.forename: T
authors.initials: T
authors.lastname: Gohongi
authors.forename: K
authors.initials: K
authors.lastname: Yuzawa
authors.forename: K
authors.initials: K
authors.lastname: Fukao
authors.forename: M
authors.initials: M
authors.lastname: Fujiwara
authors.forename: K
authors.initials: K
authors.lastname: Fujii
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000473:pathology*; D000368:Aged; D006801:Humans; D008297:Male; D009360:Neoplastic Cells, Circulating / Q000473:pathology*; D011169:Portal Vein / Q000473:pathology*; D013274:Stomach Neoplasms / Q000150:complications* / Q000473:pathology*; D013924:Thrombophlebitis / Q000209:etiology*