Benign Cystic Teratoma of the Ovary : A Review of 608 Patients

MONGKOL BENJAPIBAL, M.D.*, ISSARACHA SUPHANIT, B.Sc., (Med.Tech.)*, DITTAKARN BORIBOONHIRUNSARN, M.D.*, SUTHI SANGKARAT, M.D.*

Affiliation : * Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.

AbstractThis retrospective study reports on 608 cases of benign cystic teratoma of the ovary treated at Siriraj Hospital over a ten-year period from 1988-1997. Mean age of the patients was 33.7 ± 11.3 years. Approximately one-third of the patients (35.0%) were asymptomatic when the teratomas were discovered, of the rest, the common presenting symptoms were abdominal pain (52.9%) or palpable abdominal mass (30.6% ). The tumors were between 6-10 em in greatest diameter in more than half of the patients (53.6%) and in 78 patients (12.8%), the tumors were bilateral. Complications from the tumors were found in 72 patients (11.8% ): 68 cases of torsion (94.4% ); two were spontaneous rupture (2.8% ); and two were infected (2.8% ). The mean age of patients with twisted tumor was significantly less than that of patients with uncomplicated tumor (p = 0.02), and abdominal pain was found more commonly in the patients with twisted tumor (p < 0.001). Among cases with torsion, more than 90 per cent of the tumors were found to be of intermediate size (6-15 em), while only 68.8 per cent were found in uncomplicated cases (p < 0.001). Surgical treatment was conservative in 63.8 per cent) and radical in 36.2 per cent of the patients.

Keywords : Benign Cystic Teratoma, Ovarian Neoplasms, Twisted Tumor

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