I never saw it personally but an employee's brother had a "fatty tumor" on the back of his neck removed (made him look like a hunchback). It was size of a dinner plate, 3+/- inches thick/bulge by the time it was removed. Not painful, just a cosmetic DISASTER!
They slit it open and pushed it out like a jellyfish under his skin. Mark said it was nothing painful but very nasty to see. It looked like cottage cheese....