Unilateral tuboovarian abscess: a distinct entity.

In a 30 month interval at the Los Angeles County-University of Southern California Medical Center, 85 patients had tuboovarian abscesses removed that were unrelated to complications of pregnancy. Thirty-seven patients (44 per cent) of the 85 had unilateral abscesses. Twenty patients (54 per cent) of the 37 patients with a unilateral abscess were using an intrauterine contraceptive device (IUD). In 13 (65 per cent) of the 20 women using an IUD, the foreign body was a Dalkon Shield. Unilateral pelvic abscesses can occur with or without the presence of an IUD.