Clinical Presentation
A middle-aged man with a recent history of a high-speed motor vehicle accident who underwent emergent open reduction and internal fixation of pelvic fractures presents months later with pelvic pain and fevers.

Fig. 100.1 (A) Supine abdominal radiograph shows screw and plate fixations of the patient’s pelvic fractures. Partially obscured by the orthopedic hardware is a radiodense ribbon at the level of the pubis (arrow). (B–D) Contrast-enhanced CT images show a right pelvic abscess collection (arrow) in the right obturator space that demonstrates an enhancing rind around a spongiform gas collection with mass effect on the rectum. (D) The radiodense ribbon is best seen on bone windows and is within the collection (curved arrow).
Radiologic Findings
Supine abdominal radiograph shows screw and plate fixations of the patient’s pelvic fractures (Fig. 100.1A). Partially obscured by the orthopedic hardware is a radiodense ribbon at the level of the pubis. Contrast-enhanced computed tomography (CT) images show a right pelvic abscess collection in the right obturator space that demonstrates an enhancing rind around a spongiform gas collection with mass effect on the rectum. The radiodense ribbon is best seen on bone windows and is within the collection (Fig. 100.1B–D).
Diagnosis
Gossypiboma (textiloma or retained surgical sponge)
Differential Diagnosis
Abscess as a complication of
- Acute appendicitis
- Acute diverticulitis
- Surgery
- Perforated tumor or stercoral ulcer
- Tumor
- Hematoma

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