PT - JOURNAL ARTICLE AU - Katie Nga Yee Fong AU - Tiffany Wing See Lau AU - Clarence Chi Chuen Mak AU - Ka Wing Lui TI - Inguinal endometriosis: a differential diagnosis of right groin swelling in women of reproductive age AID - 10.1136/bcr-2019-229864 DP - 2019 Aug 01 TA - BMJ Case Reports PG - e229864 VI - 12 IP - 8 4099 - http://casereports.bmj.com/content/12/8/e229864.short 4100 - http://casereports.bmj.com/content/12/8/e229864.full SO - BMJ Case Reports2019 Aug 01; 12 AB - We reported a case of right inguinal endometriosis in a 41-year-old woman with unremarkable surgical and gynaecological history. She presented with right groin swelling for a month since her last menstrual period. Clinically the swelling was first diagnosed as inguinal hernia and later histologically proven to be endometriosis.