Definition: Reoperation is a surgical procedure that involves replacing or removing one part of a person's body with another. This can be done for various reasons, such as cancer treatment, reconstructive surgery, or to correct defects in the body. In general, reoperations are considered more invasive than simple surgeries and may involve anesthesia, sedation, and sometimes surgery to remove a portion of the body. These procedures are often performed by surgeons who have completed a specific training program and are recognized for their expertise in performing