Development of mucinous adenocarcinoma in chronic fistula-in-ano: A case study

Abstract

Chronic perianal fistulas are a common clinical condition. However, their evolution to carcinoma is rare. We report a case of recurrent chronic perineal fistula which turned into malignant tumor. The diagnosis was established by clinical examination, repeated biopsy, and colonoscopy. Clinical examination features suggested malignancy, but initial biopsy report showed cellular atypia and colonoscopy followed with biopsy revealed as large ulcerated rectal growth suggesting Carcinoma (CA) rectum and histopathological report showed infiltrating mucinous adenocarcinoma. It is suggested that this rare complication of chronic fistula-in-ano may be prevented by prompt expert management of complex primary fistula.

Keywords

• Biopsy
• chronic fistula-in-ano
• colonoscopy
• mucinous adenocarcinoma