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A woman in her early 60s [exact age at the time of reaction onset not stated] developed hyperandrogenism and virilization during treatment with anastrozole [duration of treatment to reaction onset not stated].
The woman, who was diagnosed with oestrogen-positive receptor breast cancer, started receiving treatment with oral anastrozole 1 mg/day. At age of 67 years, she presented to the endocrinology division complaining of progressive increase of hair growth, deepening voice and male pattern baldness. The onset of her symptoms was associated with the use of aromatase inhibitor therapy with oral...