It is hypothesized that the inhibition of estradiol production by letrozole may interfere with physiological effects of progesterone necessary to maintain the pregnancy. Treatment of tubal pregnancy with letrozole would allow to avoid the adverse effects of methotrexate (MTX) in women refusing surgery. The aim was to compare the effectiveness of letrozole with MTX in the management of tubal pregnancy.
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The effectiveness of the treatment
Timeframe: up to 6 months