in 221 cases of epidermoid carcinoma of the anal canal not involving more than three quarters of the circumference of the anal canal or the vaginal mucosa combined external beam using 60 cobalt ( 30 gy over 19 days ) with an iridium implant boost ( 10-20 gy ) 2 months later resulted in a 5-year survival rate of 65 % .
C1332262
epidermoid carcinoma
C0227411
anal canal