PT - JOURNAL ARTICLE AU - Constance Wou AU - Nicola Chaston AU - Samer Doughan TI - Mistaken identity: endometrial or rectal cancer? AID - 10.1136/bcr-2013-202874 DP - 2014 May 20 TA - BMJ Case Reports PG - bcr2013202874 VI - 2014 4099 - http://casereports.bmj.com/content/2014/bcr-2013-202874.short 4100 - http://casereports.bmj.com/content/2014/bcr-2013-202874.full AB - A 59-year-old woman with a previous history of endometrial and breast cancer was referred to the colorectal rapid access clinic with abdominal cramps, per rectal bleeding and diarrhoea. CT, MRI and flexible sigmoidoscopy confirmed a rectal tumour and due to its appearance, it was thought to be a primary rectal malignancy. The patient underwent an anterior resection and end colostomy. Histology confirmed a metastatic endometrial adenocarcinoma, which is an unusual site for endometrial metastasis. Her postoperative recovery has been unremarkable and the patient has subsequently been discharged from the general surgical team.