My Mother Wasn't Feeling Well And Went To Dr. He

My mother wasn't feeling well and went to dr. He ordered a test to look at the inside of her stomach. He found a bump under her stomach lining about the size of a golf ball. He ordered a CT scan with contrast and scheduled for her to come back the following wk to discuss the results. What could this be? My Mind keeps going to the word Cancer, however we are all hoping and praying not.