Appendicitis masses are also clinically referred to as periappendiceal abscesses. In clinical practice, based on the clinical course and pathological anatomical changes of acute appendicitis, appendicitis can be divided into four pathological types, including acute simple appendicitis, acute suppurative appendicitis, gangrenous and perforated appendicitis, and periappendiceal abscess. Periappendiceal abscesses form when acute suppurative appendicitis becomes gangrenous and perforated, and the process progresses slowly enough for the body’s greater omentum to move into the right lower abdomen, encasing the appendix and forming adhesions and an inflammatory mass or periappendiceal abscess. Usually, if a patient develops an appendicitis mass, i.e., a periappendiceal abscess, active anti-infective treatment is given, and surgery is usually performed after 3-6 months, and the healing process is usually good.