The goal of this study is to compare a Self-Regulation Hypnotic Intervention (SRHI) to the standard procedure (Treatment As Usual with analgesic and sedative agents) for pain and anxiety management during rectal cancer brachytherapy. Hypnotizability of patients undergoing this procedure will be assessed and those who are thought to need analgesic and sedative agents during the procedure will be distributed (sequentially adjusted randomization) in two groups, one that will be trained and assisted using hypnosis and one that will not. Procedural pain, anxiety, difficulty and patients' vital sign will be assessed. Our hypothesis is that patients in the hypnosis group will experience less pain and anxiety and will need less medication than those in the control group.