Massive haemorrhage due to rectosigmoid ulcers in a patient with extensive burns

A 36-year-old white-skinned male was admitted with 45.5 per cent burns, mostly of full skin thickness. Severe rectal bleeding from rectal ulcerations developed on postburn day 12. Various conservative attempts at management failed, and after multiple transfusions, abdominoperineal resection was carried out with eventual complete recovery. Complications during his acute phase included Pseud. aeruginosa sepsis and Clostridium difficile diarrhoea. Extensive skin grafts were required. The cause of the rectal ulcerations is unclear.