TY - JOUR T1 - Answer JF - Gut JO - Gut SP - 977 LP - 977 VL - 55 IS - 7 A2 - , Y1 - 2006/07/01 UR - http://gut.bmj.com/content/55/7/977.abstract N2 - From question on page 932 Computed tomography scan demonstrated a duodenal mass intussuscepting into the jejunum causing obstruction. The scan showed a dilated duodenum and due to the retroperitoneal fixation of the duodenum, the intussusception appeared as two separate masses at the genu inferius (A in fig 1) and duodenojejunal junction (B in fig 1). The classic radiological presentation of intussusception is the coiled spring appearance; this was poorly visible in … ER -