TY - JOUR T1 - Osseous metaplasia in a tubular adenoma of the colon JF - Journal of Clinical Pathology JO - J Clin Pathol SP - 220 LP - 221 DO - 10.1136/jcp.2004.020685 VL - 58 IS - 2 AU - W I Al-Daraji AU - A Abdellaoui AU - W D Salman Y1 - 2005/02/01 UR - http://jcp.bmj.com/content/58/2/220.abstract N2 - An 85 year old woman presented with a one month history of change in her bowel habits in the form of alternating diarrhoea and constipation. She also noted some rectal bleeding. Flexible sigmoidoscopy revealed a 1.5 cm polyp 30 cm from the anus. The polyp was removed during the sigmoidoscopy by electrocautery and sent for histological examination. The polyp was a tubular adenoma with mild dysplasia. The adenoma contained numerous foci of metaplastic bone. These consisted of irregular islands of mineralised osteoid bone rimmed by a layer of scattered osteoblasts. This is the first case of osseous metaplasia in a tubular adenoma of the colon to be reported. ER -