ABSTRACT

Purpose:

Anorectal carcinoma arising from a chronic anal fistula is extremely rare. Such lesions are usually misdiagnosed for the more common benign perianal abscess or fistula. Herein, we report on a case treated aggressively for anorectal cancer arising from chronic perianal fistulae. Therefore, surgeon should keep in mind that longstanding anal fistula may cause anorectal cancer in years.