Primary bilateral inguinal endometriosis: A case report

Endometriosis is a chronic benign recurrent gynecologic disease commonly affecting 10% of women worldwide wherein endometrial glands implant and mature outside the uterine cavity causing symptoms such as dysmenorrhea, dyspareunia, or abdominal pain. Herein we describe a case of a 40-year-old female with primary bilateral inguinal endometriosis presenting with catamenial pain for which surgical excision was performed providing definitive treatment. The patient has been asymptomatic with no recurrence at 6 months of follow-up. Most cases of endometriosis occur within the pelvis however, extra-pelvic sites have been reported which include previous surgical scars, bladder, diaphragm, or inguinal area. It is usually classified as primary or secondary but can also be based on location. Oftentimes, these patients can present as a diagnostic dilemma for clinicians and treatment requires surgery and/or medications such as oral contraceptives or hormonal agents. Common diagnoses include hernia, lipoma, lymphadenopathy, or even malignancy. We would like to highlight the atypical presentation, pathogenesis, and management of endometriosis in this rare site. •Endometriosis is a benign, recurrent, painful disease of reproductive-age women.•The inguinal area is a rare extra-pelvic location of endometriosis.•Surgical excision is often the treatment of choice for inguinal endometriosis.