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Pharmacology
A 55-year-old woman is noted to be taking tamoxifen to help with breast cancer. She also complains of vaginal bleeding. Wof is the best explanation for vaginal bleeding
It is an estrogen antagonist in the breast and uterus, leading to loss of endometrial cells.
It has an antagonist effect on the breast but an agonist effect on the uterus.
It has estrogen agonist effect of the breast and uterus, thereby leading to endometrial hyperplasia.
It has no effect on the uterus, and the vaginal bleeding is caused by something else.
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