Gossypiboma, a Rare Cause of Abdominal Pain: A Case Report.

Gossypiboma is a retained surgical item, most commonly gauze or sponge, inadvertently left inside a patient's body after surgery. Although preventable, it can cause severe complications and is often underreported due to medicolegal concerns. We present a case of a 61-year-old woman who experienced left lower abdominal pain for three days. Her history included lumbar disc surgery via the lower left abdomen a decade earlier. Physical examination revealed a non-tender pelvic mass, and abdominal computed tomography (CT) showed a 4.5 × 4.7 × 6.1 cm high-attenuation lesion with internal low-attenuation areas in the left retroperitoneal space. The mass was surgically removed, and gauze material was identified inside, confirming the diagnosis of gossypiboma. The patient recovered uneventfully postoperatively. Gossypiboma can present with subacute or chronic symptoms, making diagnosis challenging. While uncommon, gossypiboma should be considered in differential diagnoses of patients with unexplained abdominal masses and prior surgical history. Prompt surgical management is essential to prevent complications. This case highlights the importance of meticulous surgical counts and awareness of this rare but serious condition.