Its not the first time this has been discussed, unfortunately lol.
Few years ago there was a med student on here with his wealth of one year in medical school was certain he would be able to perform the operation in the toilets of the hospital he on placement. His plan was only to remove the glands and to do it with local anesthesia, and to make an incision under the nipple and simply cut away the gland away, and then stitch it back to together himself. He seemed pretty adamant he could do it, and if it all went wrong hey he was in the hospital so someone would find him and he would be saved.
I cant remember what happened with him, but yeah it was a stupid idea and probably would of ended with him bleeding to death on the floor. Its not possible, it requires about 4 trained medical professionals to carry out in a hospital.
Edit :
http://www.gynecomastia.org/smf/1/i-will-be-performing-self-surgery-soon/msg155953/#msg155953for reference, looking back i was being a bit harsh but there was a few cases of people abusing members, making false stories up at the time. But i dont know reading it again it was quite meticulously planned so he probably was considering it.