A series of 96 patients who were diagnosed with 120 ovarian neoplasms at surgery have been reviewed. Nine types of benign ovarian cysts were encountered. Benign cystic teratoma with an incidence of 30% was the commonest tumor. The majority of these were in the 20-30 year age range. The mean age of the patients with mucinous cyst adenoma and benign cystic teratoma was significantly less (P less than 0.05) than those with serous cyst adenoma. The incidence of ovarian malignancies of 8.3% was low, and none of the malignancies was bilateral. There was a high incidence of 8.3% of malignant change in benign cystic teratomas. Abdominal pain and swelling were the symptoms most frequently experienced in patients with benign ovarian neoplasms.

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