[Extrabulbar duodenal ulcer].
D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging*; D006801:Humans; D008722:Methods; D011187:Posture; D011859:Radiography
Pozaopuszkowe owrzodzenia dwunastnicy.