Rare case of ureteral endometriosis presenting as hydronephrotic kidney

A 29-year-old woman presented with unilateral loin pain because of severely hydro-nephrotic kidney due to deposits of pelvic endometriosis. Double J-stent was placed beyond the obstruction and she was started on hormone therapy. The stent was removed after three months when back pressure changes had resolved. This case is being presented along with a short relevant discussion, due to rarity of ureteral involvement by endometriosis.