[Gastroduodenal intussusception on gastric tumor].

Gastroduodenal intussusception is a rarely documented condition. A distinction has to be made between complete gastroduodenal intussusception (CGDI) and either prolapse of a pedunculated tumor through the pylorus or mucosal prolapse through the pylorus. CGDI usually occurs secondary to a pedunculated benign gastric tumor. More rarely the tumor is malignant. We report a case of CGDI associated with gastric adenocarcinoma. We emphasize diagnostic difficulties that can be generated by CGDI.