INFO/WWW-LINKS:
A portal/lienal vein thrombosis may be idiopathic (mostly) or caused by e.g.
(1) Tumor invasion by HCC, cholangiocarcinoma, pancreatic carcinoma, gastric
carcinoma / extrinsic compression by tumor (2) Trauma; umbilical venous catheterization
(3) Blood dyscrasia; clotting disorder; estrogen therapy; severe dehydration;
Cx of splenectomy (7%, higher in patients with myeloproliferative disorders)
(4) Intraabdominal sepsis with phlebitis; perinatal omphalitis; pancreatitis;
ascending cholangitis (5) Cirrhosis + portal hypertension (5%)
(Wolfgang Dähnert, Dähnert`s Electronic Radiology
Review, Williams and Wilkins 1998)