RT Journal Article SR Electronic T1 Malignant melanoma of the anal canal JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 126 OP 132 DO 10.1136/jcp.16.2.126 VO 16 IS 2 A1 Morson, B. C. A1 Volkstädt, H. YR 1963 UL http://jcp.bmj.com/content/16/2/126.abstract AB The clinical and pathological features of 15 cases of malignant melanoma of the anal canal are described. It would appear from this study that these tumours arise from squamous epithelium lining that part of the anal canal at or just above the line of the anal valves.