Yes I had two one inch rectal fissures but not from chemo mine was from chronic constipation. Mine happened a long time ago but they flare up often as a matter of fact I’m in a flare now. I use Anucort HC supporters. I think mine are 25 mg. Also there is a rectal ointment put out by a proctologist here in OK it has to be compounded. The doctors name is Neil Woodward.