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Pre-operative imaging of the abdomen by ultrasound and computertomography. A) Transabdominal 5MHz Ultrasound examination revealing a 47 mm diameter round mass in the right upper abdominal quadrant (arrows). The computed tomography of the abdomen in an axial plane (B) with coronal reconstruction (C) showing the cystic duplication with mucosal invagination in the ascending colon. Notice the rectal contrast filling that stops at the lesion (arrows).
