Open/laparoscopic appendicectomy is a surgical procedure to remove the appendix, a small organ attached to the large intestine, when it becomes inflamed or infected (appendicitis). Open appendicectomy involves a single incision in the abdomen, while laparoscopic appendicectomy uses small incisions and a camera for a minimally invasive approach. Both methods effectively treat appendicitis, with laparoscopic surgery offering faster recovery and less scarring.