“…The anti-mesenteric border of the ileum is the usual site of perforation, within 40 cm of the ileo-caecal junction (1), but it has been reported to occur up to 80 cm from the ileo-caecal junction, in the appendix, caecum or colon (2). When it occurs in the caecum, the clinical and radiological features are indiscernible from an ileal perforation (2,3). The diagnosis is usually made intra-operatively.…”