Perianal cancer is located within a 3cm radius of the anal opening when the buttocks are gently pulled.
Because the location of perianal cancer is hidden and the symptoms are vague, its diagnosis is often delayed. Symptoms of perianal cancer include anal itching, bleeding, painful mass, incontinence (discomfort in the lower abdomen, a strong desire to relieve stool, and a feeling of incomplete bowel movement after stool), and even fecal incontinence.
If perianal cancer below dentate line does not exceed 1/3 of perianal area and does not invade sphincter, local wide excision can be performed. If perianal cancer exceeds the dentate line or invades most of the anal sphincter, combined abdominal perineal resection plus permanent artificial anus surgery is needed.
Patients who have anal discomfort and masses should not diagnose on their own, but should be diagnosed by a professional doctor after a series of relevant examinations, and then give a clear diagnosis and a reasonable treatment plan.