as you have understood accumulation of fat, sometimes familial. They look ugly when present in the exposed areas though they rarely cause any pain. If you want to get rid of them, there are two options. First one is surgical removal. second is injection lipolysis
which is non-surgical. Contact a surgeon for the first and dermatologist
for the second option. Surgery is one time affair and can leave a scar, where as injection lipolysis may need a few re-injections but scar-free. So, choice is yours!