Risk factors for thrombosis in a mesenteric vein:
(1) hypercoagulable state
(2) portal hypertension
(3) intra-abdominal inflammatory condition
(4) blunt abdominal trauma
(5) post-splenectomy
(6) other post-operative state
(7) decompression sickness
Hypercoagulable state:
(1) protein S or C deficiency
(2) antithrombin III deficiency
(3) oral contraceptive therapy (in a female)
(4) pregnancy (in a female)
(5) polycythemia vera or thrombocythemia
(6) malignant disease
(7) Factor 5 Leiden
(8) prothrombin G20210A
(9) antiphospholipid syndrome
(10) other
Portal hypertension:
(1) congestive splenomegaly
(2) cirrhosis
(3) after sclerotherapy of esophageal varices
Intra-abdominal inflammatory condition:
(1) acute peritonitis
(2) acute pancreatitis
(3) inflammatory bowel disease
(4) intra-abdominal or pelvic abscess
(5) acute diverticulitis
