I think anytime we hear that we have a mass, it is concerning. I had a colonoscopy and there was a stricture causing mass in my sigmoid, big enough that he couldn’t complete any of the scope. My GI did get some tissue, but it was small and the determination was high grade dysplasia but suspected cancer. I has an immediate CT scan which showed more of the mass and also showed that lymph nodes appeared affected and that it suggested metastatic tumor. The CT wasn’t done using the slide preferred by my surgeon, but because my mass was partially obstructing, I needed surgery quickly. It was scheduled for three weeks after scope. When they removed the tumor it was cancerous and about 15 cm and had grown near other organs (ovary, cecum and appendix) but didn’t spread to any other organs so I was stage 2A. No metastasis and 0/54 lymph nodes involved I am four years out from surgery and still NEd

Based on your family history and the existence of a mass, I would not delay in seeking treatment, but know that it isn’t hopeless and left sided CRC are the “best” type to get

Stay hopeful, reduce your stress )hard to do) and get your body prepared for whatever treatment is ahead. Load up on protein and hydrate your body.