[Two cases of hepatic portal venous gas].
D004618:Embolism, Air / Q000209:etiology*; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000150:complications; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011859:Radiography; D013927:Thrombosis / Q000150:complications