This procedure uses implants to enhance the shape or size of the buttocks and to give them a lift as well.
Buttock augmentation with implants in Metro Manila, Philippines by Dr. Raul Guanzon. Results
This procedure extracts fat from an area where there is too much fat and injects that extra volume into the buttocks to enhance their shape. The tummy as the source of fat is a very popular choice. The thighs can be another good source.
This is pretty self-explanatory, with revision actually as an option to insert a new set of implants after a removal procedure. A reason for a removal would be an adverse reaction. For a revision, it would be an adverse reaction, for a change of size, for a change of type, or for a firmer look.