My mom had lung cancer about 3 years ago. She was a smoke for many many years. She quit about a month before she realized she had cancer. She had the cancer removed, had chemo and was fine. She then had a recurrence in her small intestine of the same kind of cancer about 6 months later, had it remove and has been fine ever since. She has been healthier than she ever has. Recently, a spot that has been on all her scans since the surgery has been getting bigger. Her doctors think its scar tissue because they said the way it's growing is not indicative of a tumor. Does this type of think happen all the time or is it more than likely a recurrence?