because i heard from a doctor, abnormally large mammary glands can also develope in the belly area?

how dangerous will the procedure be, whats the difference between fat sucktion and removing the fatty scar tissue?

I think what he meant is that sometimes the breast tissue can fold down covering the stomach. otherwise it is just rolls of fat. as for any questions you might have about procedures and stuff try the website:
http://www.gynecomastia.org/
it has tons of info about this stuff.