Abstract
A few years ago Meyer1classified certain ovarian tumors according to their biologic effects. The tumors were the arrhenoblastoma, which produces masculine changes, the granulosa cell, or feminizing, tumor and the dysgerminoma, which occurs in women with pseudohermaphrodism or poorly developed gonads. Both masculine and feminine features occurred in the case of ovarian cyst to be reported, but their relation to the cyst is perhaps questionable. REPORT OF CASE The patient was an Italian girl aged 19. She came to the hospital complaining of a third attack of sharp, continuous abdominal pain of twenty-four hours' duration, which had come at the end of a menstrual period; the others had preceded the last two menstrual periods and had been less severe. During the past year menstruation had occurred every three weeks, whereas it had taken place every four weeks previously since the age of 14. The change in menstrual frequency

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