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A 44-year-old lady presenting with hirsutism was found to have a testosterone-secreting Leydig cell tumour of the right ovary. Serum testosterone levels were adequately suppressed for 8 years by combined oestrogen/progestogen preparation (Microgynon 30, Schering, West Sussex). The fall in gonadotrophin and testosterone levels during therapy and their rise after stopping therapy suggests that the tumour was gonadotrophin dependent.
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Drife et al. (1987) studied this question.
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