An Unusual Intestinal Intussusception Detected by Single-Balloon Enteroscopy

A 41-year-old man presented with passage of dark red stool, nausea, vomiting and abdominal crampy pain. Physical examination revealed pale conjuntivae and local tenderness over the periumbilical region of abdomen, without peritoneal signs. Laboratory studies showed normocytic anemia (hemoglobin, 9.6 g/dL). Serum carcinoembryonic antigen (CEA) level was within normal limits. Abdominal computed tomography revealed a “target sign” in the left middle abdomen, and ileoileal intussusception with a leading lipoma about 2.4 cm was suspected (Figure 1A).