case-report 2022 Appendiceal Intussusception Secondary to Endometriosis: A Rare Etiology of Right Lower Quadrant Abdominal Pain Journal of the Belgian Society of Radiology ·doi:10.5334/jbsr.2739 Teaching Point: Appendiceal intussusception appears as a "sausage or target shaped" lesion in the caecal lumen and may be caused by a "lead point".