My wife age 30 diagnosed with stomach cancer( june 07). surgery chemo, radiaionton. two PET scans later both showing now cancer last scan mar 08. Went in to the hospital for pain and found to be gullblader. Dr. opened her up and found her body completely filled with tumors and one big one around her liver, gulbladder, stomach, and intestines. So tell me how can a PET scan, CT scan, Untrasound and Nuclear scan not detect a tumor the size of a volley ball. or any of the other ones in her body. .