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can cause endometrial hyperplasia
in upto 50% of woman using it. It is reassuring to know that your biopsy was benign. Tamoxifen can cause endometrial cancer
in a very small number of patients.
Hyperplasia induced by estrogen
therapy responds well to progestin treatment .If you are having frequent and heavy bleeding you should consult your gynaecologist regarding D&C procedure.
Headache is also common side effect of tamoxifen ,but since you've completed your course of tamoxifen you need not worry about that,