[Squamous cell cancer of the anal canal].

Squamous cell carcinoma of the anal canal is rather rare and amounts to 3.5% of all rectal neoplasms. Though it has a clear-cut clinical picture, 29.5% of patients admitted for specialized treatment suffer from stage IV due to inadequate diagnosis. Surgery is the most effective method of management of squamous cell carcinoma of the anal canal. Radiation therapy may be an adjuvant procedure.