My Mother In-Law went to a local San Fran hospital in 3/09 for a routine colonoscopy. Colonoscopy was performed and nothing was found. 5 months later in 8/09 (late August), she went in with symptoms including internal bleeding and vomiting. Surgery was performed and a cancerous tumor was found in the bottom of her small intestine. After surgery she was diagnosed with stage 4 colon cancer, which we believe could have been prevented if the tumor was found during the colonoscopy. Hospital stated their colonoscopy scan does not reach the small intestine. Her current Dr. here in WI does not believe the tumor should have been missed during a colonoscopy We are simply wondering, in our specific case, when the SOL would start - back in March of 09 or when tumor was found in late august 2009?