Hi No more panic, the CT scan that I'm having on Thursday is a Pneumocolon.. I'm having it done on Thursday.. I was scheduled to have a Sigmoidoscopy last week but the Dr felt that because of my anxiety it would be too painful I don't know how true this is as quite a number of people on here have had it done with sedation... I find all the different procedures confusing ... I can imagine how your feeling Jimsie maybe go & have a chat with your GP...