Surgery is a medical procedure that involves the use of manual or instrumental techniques to diagnose or treat a physical condition or disease. It typically involves making incisions or cuts in the body, manipulating tissues and organs, and suturing or sealing the wound. Surgery may be performed for various reasons, including fat removal and transfer. It is not possible to transfer fat from the stomach to the buttocks without at least a minimally invasive surgical procedure. Fat transfer involves a minimally invasive surgical procedure called liposuction, where fat is removed from one area of the body and injected into another. There are no effective non-surgical methods that can achieve this kind of fat transfer.