ABSTRACT
Pelvic actinomycosis is a rare infectious disease in female genital organ, which occurs most commonly with intrauterine device. Because of it's diverse clinical manifestation and progress, the diagnosis is made postoperatively by pathologic confirm in most cases and adequate medical treatment is required. Ureter obstruction is one of the common complication of pelvic actinomycosis, but it's management has been very variable by cases. If physician operate this after adequate management of ureter and preoperative antibiotics therapy, the risk of pelvic structure injury is reduced and then a patient can be saved from an extensive surgical procedure. We experienced a case of pelvic actinomycosis complicated by tubo-ovarian abscess with ureter obstruction and hydronephrosis, improving by Double J catheter insertion and preoperative antibiotics therapy and report it with brief review of literatures.