TY - JOUR T1 - Granulocytic sarcoma of the rectum: a rare complication of myelodysplasia. JF - Journal of Clinical Pathology JO - J Clin Pathol SP - 865 LP - 866 DO - 10.1136/jcp.52.11.865 VL - 52 IS - 11 AU - V Dabbagh AU - G Browne AU - L A Parapia AU - J J Price AU - P A Batman Y1 - 1999/11/01 UR - http://jcp.bmj.com/content/52/11/865.abstract N2 - A 67 year old man with myelodysplasia was admitted as an emergency with a six week history of rectal bleeding and diarrhoea. Barium enema showed an irregular polypoid filling defect in the lateral wall of the proximal rectum near the rectosigmoid junction. Histology showed this to be a granulocytic sarcoma (extramedullary granulocytic leukaemia; chloroma) infiltrating the bowel. A low index of suspicion of this lesion results in an incorrect diagnosis in many such cases. A chloroacetate esterase immunoperoxidase stain will confirm the granulocytic nature of the tumour cells. ER -