More colonscopies than I care to count, lol! But the first one diagnosed me, the biopsy from it did. I'd had symptoms for over a year, just didn't know what it was until I called a G.I. and scheduled an appt. He promptly scheduled the first scope. And have had the upper G.I. (esophagogastroduodenoscopy) 2-3 times for gastritis. And the lovely barium shakes with xrays many times too.