{"paper_id":"0c90b22e-fdef-4f6f-ae4d-f6f3bfd1f25c","body_text":"Endometriosis of the round ligament as a cause of groin pain has been reported previously. 1 – 4  In these reported cases, the primary diagnosis was thought to be irreducible hernia. In this article, we describe 2 patients with a myoma-like mass near the right round ligament that caused severe groin pain.\n\nA 24-year-old, virginal female with excruciating menstrual groin pain causing her to faint was referred to our center. After routine laboratory examination and sonography were performed, no suggestible diagnosis was obtained. Examination of the region of the right inguinal canal was normal. So, a diagnostic laparoscopy was performed on this patient. A small mass (10x10 mm) was found on the anterior surface of the uterus near the right round ligament. The mass was dissected from the uterus. During dissection, a cavity full of dark blood was found in the central part of the mass. The pathology report indicated adenomyosis of the uterus. After this procedure, the patient was totally asymptomatic.\n\nA 28-year-old G2, Lch2, female was admitted with severe groin pain and a history of taking daily intramuscular analgesics and a normal previous laparoscopy. Having the history of the previous patient (Case 1) in mind, we suggested a second-look laparoscopy. During the laparoscopy, we found that the uterus was asymmetrical, and a small bulge was seen near the right round ligament. The bulge was resected and found to be an infiltrated mass (16x15 mm) penetrating into the myometrium. Again, a cavity with dark blood was found in the center of this mass. The pathology report revealed adenomyosis of the uterus.The patient was totally asymptomatic after this procedure.\n\nEndometriosis of the round ligament can cause severe groin pain. 5 , 6  Usually, it is located in the inguinal part of the round ligament. 1 , 2  Differentiation should be made between endometriosis of the round ligament and an inguinal hernia. 2  It is reported that this type of endometriosis occurs mostly on the right side. 5  What is interesting about our cases is that the location of the pathology was on the uterus near the insertion of the round ligament, on the right side in both cases. To our surprise, although the masses looked like myoma, the pathology report indicated adenomyosis.","source_license":"CC0","license_restricted":false}