Fig. 1From: Small intestine duplication cyst with recurrent hematochezia: a case report and literature reviewCT and capsule endoscope images of the lesion. Abdominal CT showed an indistinct ileocecal structure with a “doughnut” sign (yellow arrow) (a). Two subsequent capsule endoscopes revealed a protruding lesion with bleeding in the distal ileum(yellow arrows) (b, c)Back to article page