A Rare Case of Isolated Diverticular Disease of the Appendix Combined With Uncomplicated Appendicitis.

The differential diagnoses for patients presenting with right iliac fossa pain are broad, with appendicitis almost always on the top of the list. Although rare, diverticulosis of the appendix, complicated by inflammation, should be considered in these patients. We report a case of a middle-aged female with right iliac fossa pain with a high inflammatory marker. CT of the abdomen and pelvis showed uncomplicated appendicitis. The patient underwent a diagnostic laparoscopy, which confirmed an inflamed appendix and three small nodules in the body of the appendix. An appendectomy was performed, and histopathology showed diverticulosis of the appendix with appendicitis. She recovered uneventfully, and the follow-up colonoscopy was normal. This report illustrates the complexities associated with diverticular disease of the appendix and its potential to mimic appendicitis and highlights the importance of histopathology examination in these cases.