A new sign of small bowel volvulus. Gas in mesenteric vein without gas in portal vein.
D000368:Aged; D004618:Embolism, Air / Q000000981:diagnostic imaging*; D005260:Female; D005734:Gangrene / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007415:Intestinal Obstruction / Q000150:complications / Q000000981:diagnostic imaging*; D007421:Intestine, Small; D008642:Mesenteric Veins; D011169:Portal Vein; D011859:Radiography