The patient was clinically diagnosed as acute appendicitis although initial ultrasound examination was in favor of right sided diverticulitis rather than appendicitis (ultrasound images not available).

CT was done to prevent unnecessary surgery, and confirmed the right sided diverticulitis.

The patient received antibiotics and symptoms resolved without complication.

Right sided diverticulitis typically follows a more benign course when compared to left sided diverticulitis owing to the fact that it is a true diverticulum, as one of the annotated images demonstrates.