Imaging of a retained laparotomy towel that migrated into the colon lumen

Abstract Retention of surgical instruments, most commonly small laparotomy sponges, is a known complication of surgery. Such retained instruments may remain silent or may cause a variety of complications. We report a case in which a retained laparotomy towel migrated into the colon. This is an infrequently reported complication. We were able to document the passage of the towel through the colon on plain radiographs. The USG and MRI findings are also described.