PT - JOURNAL ARTICLE AU - C M Bakker AU - M N Sosef AU - R A Vliegen TI - A wolf in sheep's clothing AID - 10.1136/bcr.11.2010.3492 DP - 2011 Jan 01 TA - BMJ Case Reports PG - bcr1120103492 VI - 2011 4099 - http://casereports.bmj.com/content/2011/bcr.11.2010.3492.short 4100 - http://casereports.bmj.com/content/2011/bcr.11.2010.3492.full AB - Carcinoid tumours are often difficult to diagnose because of non-specific symptoms, mimicking those of irritable bowel disease of Crohn's disease. The authors describe a 57-year-old patient with clinical and radiological features, suggestive of Crohn's disease, in whom the diagnosis was proved to be a carcinoid tumour involving the terminal ileum. This case report illustrates that ileal carcinoid should be considered in the differential diagnosis of Crohn's disease, particularly in older patients.