Particular types of functional cysts are those associated with PCOS, which happen because of chronic anovulation, and theca-lutein cysts, which are only seen during pregnancy, when there's too much HCG.

PCOS可导致特征性的功能性囊肿，由长期无排卵导致；卵泡膜黄素囊肿只见于怀孕期间，由HCG分泌过多导致。

Other risk factors related to high estrogen levels are never having been pregnant; chronic anovulation, when the ovaries don't release an egg during a menstrual cycle; and having many menstrual cycles.

其它与高雌激素水平相关的危险因素有：从未怀孕；慢性无排卵疾病，即卵巢在月经周期中不排卵；以及多次月经周期（月经周期紊乱）。

A condition where you might have multiple follicular cysts is polycystic ovary syndrome, which is caused by a dysfunction in the hypothalamic-pituitary-ovarian axis that causes chronic anovulation, which may lead to amenorrhea, or absent menstruation, and excess androgen production.

患多囊卵巢综合征（PCOS）时，可能会有多个滤泡囊肿产生，由下丘脑-垂体-卵巢轴功能失调导致；这也会造成长期无排卵，进而可能引起闭经，即月经次数减少，和雄激素生成过量。