Een man met buikpijn en koorts

A 78-year-old man presented with obstipation, abdominal pain and fever. An abdominal CT-scan demonstrated a collection of gas in the mesorectal fascia. A sigmoidoscopy showed a lineair defect in the mucous membrane and a haematoma. The patient stated he had rectally applied a thermometer as well as several enemas. The symptoms were caused by a traumatic perforation.