Objective: Abdominal wall endometriosis is rare, with an incidence of 0.03-0.47% following cesarean delivery.
Study design: The study reviewed abdominal wall endometriomas during an 8-year period in the Department of Obstetrics and Gynecology of the Kaohsiung Municipal Hsiao-Kang Hospital.
Results: Of 166 patients with endometriosis treated surgically in the hospital during an 8-year period, 20 (12%) had abdominal wall endometriomas. The mean interval between the prior operation and the appearance of the first symptoms was 39.3 months. Preoperative diagnosis was correct in 14 patients (70%).
Conclusion: Abdominal wall endometrioma is more common than generally assumed in patients visiting the hospital. In patients with a palpable subcutaneous mass near surgical scars associated with cyclic or constant pain, a thorough history and physical examination are sufficient to establish the presence of endometriomas. A surgical-wide excision with clear margins is the single treatment of choice.