Ovarian actinomycosis mimicking malignancy.

To emphasize the importance of frozen section diagnosis in the treatment of ovarian carcinoma and to remind physicians that it may mimic ovarian carcinoma and occur in women without intrauterine contraceptive devices (IUDs).Three cases operated on in Adana University Hospital between the year 2001-2003 with the diagnosis of ovarian actinomycosis were reported.Three female patients who had never used IUDs, aged 37, 45 and 47, who presented with pelvic pain and tumoral masses in the pelvis were operated on with the initial diagnosis of ovarian carcinoma between the years 2001 and 2003. Intraoperative frozen-section diagnoses of the pelvic masses were actinomycosis. In the postoperative period the patients received long-term antibiotic therapy initially intravenously (15 days), and later orally with 4 g/day for three months. They were healthy without evidence of actinomycosis infection for two years after the treatment.Pelvic actinomycosis is uncommon and may present a diagnostic dilemma because of an atypical clinical presentation. The behavior of the disease, which mimics malignancy and urogenital manifestation, poses difficulties in diagnosis and management. Preoperative examinations could not establish the nature of the tumour. An initial diagnosis of ovarian carcinoma is usually considered in all cases. Surgeons should be aware of this infection to potentially spare women morbidity from excessive surgical procedures.