【名词&注释】
肾上腺(adrenal)、继发性(secondary)、雌孕激素(estrogen and progesterone)、黄体酮注射液、放射免疫法测定(measured by radioimmunoassay)、下丘脑性闭经(hypothalamic amenorrhea)
[单选题]25岁,女,结婚4年未孕,继发性闭经8个月就诊。查子宫稍小,每日肌注黄体酮注射液5日,停药后不见阴道流血,行雌孕激素序贯试验出现阴道流血,放射免疫法测定(measured by radioimmunoassay)FSH值正常。诊断为()
A. 下丘脑性闭经(hypothalamic amenorrhea)
B. 垂体性闭经
C. 肾上腺性闭经
D. 卵巢性闭经
E. 子宫性闭经