Post-Cesarean Section Abdominal Wall Endometrioma

A 30-year-old female with a history of multiple cesarean sections presents to the emergency department with several months of right lower quadrant abdominal pain only associated with her menstrual cycles. CT abdomen and pelvis with contrast was remarkable for an abdominal wall mass that likely represented an endometrioma, and she was subsequently discharged with pain medications and conservative treatment. However, three months later, she returned to the ED, because her pain was unbearable and refractory to medical management. Interventional radiology was consulted for percutaneous biopsy of the soft tissue mass located in her rectus abdominus muscle. Following the procedure, the patient was started on ORILISSA^® (elagolix), the first FDA-approved oral treatment for the management of severe pain associated with endometriosis. We highlight an interesting case of post-cesarean section abdominal wall endometrioma implantation and describe the patient's clinical course and disease management. The radiographic features of the mass are described and proposed mechanisms for the development of an abdominal wall endometrioma following a C-section is discussed.