Cancer is an uncontrolled growth of abnormal cells. It doesn't come and go nor does it stop once it starts.
Wow... you've done gone and buried yourself! You're spiraling over an imagined scenario that is not medically logical. Tumors don't 'deflate'. and spread their cancer elsewhere. At worst it would remain the same or grow as it would be a primary site. Is there someone you can call or talk to in real life to get support?
Positive thoughts