“…It is cost saving and produces surgical outcomes for selected appendicitis patients similar to those for conventional LA [28,29]. However, in terms of postoperative pain and analgesics requirements, Lee et al [29] reported that they could find no difference between TULAA transumbilical laparoscopically assisted single-port appendectomy, OA open appendectomy, ND not detected transumbilical appendectomy and conventional LA.…”