My sister has just had a ct scan and a 10cm by 6cm by 4 depth tumor was found in her stomach, there is also nodules in her lungs.  She is 29 and collapsed on holidays.  They are flying her home presently as they will not operate.  What are the chances of it being cancer?
Upper GI endoscopy guided biopsy is need for definitive diagnosis. Possibilty of cancer can not be ruled out without endoscopy biopsy.