['Patients who are suspected of having acute appendicitis usually undergo surgery in order to avoid life-threatening complications such as perforation and peritonitis. However, acute appendicitis is difficult to distinguish from other sources of right-sided abdominal pain. The clinical picture is almost indistinguishable from appendiceal diverticulitis, which is a rare entity and remains a difficult diagnostic problem.', 'We describe the case of a 39-year-old male with perforated appendiceal diverticulitis. The patient was admitted to our surgical unit with acute appendicitis-like symptoms and underwent surgery with a diagnosis of suspected acute appendicitis.', 'The patient was found to have perforated appendiceal diverticulitis and standard appendectomy with abdominal lavage was carried out.'] Is it always appendicitis?