Abstract

A peritoneal loose body also called as ‘peritoneal mouse’ is a rare clinical entity usually found on incidentally on radiological examinations and laparotomy. Giant peritoneal loose body again rare finding with size more than 50mm, presents with different symptoms according to its location in the pelvic cavity. In this report, presenting a giant peritoneal loose body in the pelvic cavity mimicking as pelvic soft tissue tumor on radiological examination and leads to overstated surgical procedure (exploratory laparotomy). This is a case of 55-year-gentleman presented with lower abdominal pain (intermittent type) and irritative voiding symptoms and diagnosed as pelvic soft tissue mass (rhabdoid tumor on preoperative fine needle aspiration cytology) and later exploratory laparotomy revealed a free-floating egg like structure with approximately size of 6x4 cm present in the pelvis and reported as giant peritoneal loose body on post operative biopsy. Giant peritoneal loose body can present as pelvic tumor in preoperative period on radiological examination and it can lead to overstated open surgical procedure, usually can be managed with laparoscopic approach.