RESUMO
A retained drainage tube after surgery is rare and patients may be asymptomatic if it occurs. The presence of a retained drainage tube may be first recognized on imaging and this requires a high index of suspicion by radiologists. In this case report, we described an incidental finding of an asymptomatic retained fractured drainage tube in the pelvis of a 32-year-old female on ultrasonography for renal evaluation. This highlighted the need for radiologists to have a high index of suspicion when performing ultrasonography on postoperative patients and surgeons should be meticulous when removing drainage tubes postsurgery. The possibility of a foreign body should be considered when unfamiliar findings are encountered on imaging. Surgeons should inspect drainage tubes after removal to ensure the full length of the tube is removed.