Appendicitis on a CT scan presents with thickening of the appendix at the ileocecal area, pericecal fluid, high-density shadows in the appendiceal lumen and at its base, and an appendicolith. Clinical manifestations of appendicitis include referred pain in the lower right abdomen, and the examination and form of abdominal pain are important bases for diagnosing appendicitis. Combined with routine blood tests showing high levels of white blood cells and neutrophils, this indicates an inflammatory infection. Diagnosis of appendicitis can be confirmed with an abdominal CT or an ultrasound of the appendix area. Appendicitis is categorized as either acute uncomplicated appendicitis or acute gangrenous appendicitis. Acute uncomplicated appendicitis typically has good treatment outcomes and quick recovery; in contrast, conservative treatment for gangrenous appendicitis is generally less effective, necessitating surgical intervention.