During the period 1923 to 1972, 62 women with theca-cell tumors were treated at Radiumhemmet. The mean age at diagnosis was 59.5 years. Concomitant endometrial carcinoma was found in 13 patients. At 1978, after a mean observation time of 15.5 years, 30 patients were alive. No patient died from thecoma. Malignant disease caused death in 7 women. No difference in survival was found between 20 patients and 40 controls matched by age and place of residence.