TY - CHAP M1 - Book, Section TI - Anal Margin Cancer A1 - Doherty, Gerard M. Y1 - 2010 N1 - T2 - Quick Answers Surgery AB - • Located at or outside the anal verge• Usually well-differentiated, keratinizing tumors• Behave similarly to squamous cell carcinomas of skin• Lesions may be present for long periods before symptoms develop• 4 types -Squamous cell-Basal cell-Bowen disease-Paget disease SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2023/12/04 UR - accesssurgery.mhmedical.com/content.aspx?aid=58092143 ER -