I certainly hope someone has advice on this that will at least lessen the pain. I am 3-years post colostomy and my anal fissure has just been diagnosed as squamous cell carcinoma, moderately differentiated. I meet with a radiation doctor Jan. 4th to see if that is worth trying. In the meantime, I am experiencing unbearable pain. This has gone on for over a month now and I'm desperate for suggestions. A sitz bath, perhaps?