[A woman with right-sided lower abdominal pain due to intussusception of the appendix].

A 38-year-old woman presented with mild abdominal pain in the right inferior quadrant. Ultrasonography and CT scan suggested intussusception in the ileocoecal region. At exploratory laparotomy an invagination ofthe appendix through the appendicial base into the coecum was found. Pathological findings were: presence of peri-appendicitis and foci ofendometriosis in the peri-appendiceal fatty and connective tissue. Intussusception of the appendix is mostly found in children, particularly in boys.