Hi, @graciek. I was prompted by your situation as similar in some respects to mine. I had a colonoscopy on December 15 last year and a partial colectomy the next day. Leading up to that, I had been troubled by burbling juices in my colon where it crossed from right to left just below my chest. My medical team wanted some visuals, so in had a CT Scan that showed a partial blockage where the colon turns down on my left side. Was cancer involved in the tissues of the block? A colonoscopy could provide the answer, we agreed, so it was performed one day, and abdominal surgery the next day removed three-fourths of my colon and connected my shall intestine to the sigmoid section of the residual colon. Cancer was confirmed in the blockage and in the cecum (near the appendix). For good measure, they took my gall bladder out too, though no cancer turned up there or in 20 lymph glands along the route. Now six months later, I'm progressing in rehabilitation to the point of driving a hundred miles to and from medical examinations, exercising regularly in my basement gym, and dieting to build some muscle to replace 30 pounds I lost from digestive interruption. At age 88, I'm able to help my wife with homekeeping tasks and grocery shopping. Hope this can be helpful to you in deciding what to do with your medical team and whether to get another opinion from a major teaching hospital in your community. Martin

I had ct colonography (virtual colonoscopy) a few weeks prior to sigmoid colectomy. A stricture in my colon was discovered during a routine colonoscopy several weeks prior to surgeon requesting colonography. Surgeon wanted a 3D look at my colon before the actual surgery. Cannot answer if colonoscopy the day before surgery is normal or not but I presume your surgeon wants a recent updated picture of the diverticulosis/diverticulitis.