Increasing pain, tenderness, and fever are danger signs. CT is performed if the differential diagnosis includes appendicitis or an abscess. Ultrasound also is valuable to diagnose a pelvic abscess. Surgical options include resection of involved colon in one to three stages, or if a localized abscess is discovered on imaging, percutaneous drainage may be selected as the first step. Patients treated with prednisone are also at risk for perforation and general peritonitis and must be watched closely.
Intestinal continuity is restored later.
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