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当前学科：妊娠生理、妊娠诊断
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某24岁已婚妇女，平时月经规律4天／28～30天，现停经52天，黄体酮试验无出血。此病最可能的诊断是（）
A . 子宫内膜炎症
B . 早期妊娠
C . 继发闭经
D . 卵巢早衰
E . 宫颈粘连
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