Double-bubble sign.
Swischuk
Leonard E
LE
D003937:Diagnosis, Differential; D004378:Duodenal Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D045822:Intestinal Volvulus / Q000000981:diagnostic imaging* / Q000601:surgery; D011859:Radiography