Ovarian cyst: the causes

The causes of ovarian cysts can be various, it actually depends on their type ...

1 - Functional cysts

The causes of functional cysts of the ovary are poorly known. It is simply known that these cysts result from ovarian hormone activity, and therefore concern the premenopausal woman.

However, some functional cysts can be discovered in menopausal women, whose reassuring aspect should not make us forget that it could be a possible cancer that remains the first diagnosis that the doctor must think ... to not to miss!

Functional cysts are the most common ovarian cysts: they occur in 20% of women during periods of genital activity and in 15% of menopausal women. They are mild, and 90% of them disappear spontaneously in 2-3 months premenopausal.

Ovarian hyperstimulation syndrome may also be responsible for the appearance of several cysts on the ovary. This can occur in the context of treatments performed during medically assisted procreation (ART).

The ovarian functional cyst should not be confused with polycystic ovary syndrome, which in reality has nothing to do with a cyst. And that occurs preferentially in overweight women.

2 - Organic cysts

There are several types of organic cysts and their cause is only rarely known.

Dermoid cysts

Dermoid cysts develop from embryonic cells. They correspond to 20% of ovarian organic tumors, and they are found in 80% of cases in women of childbearing age.

Endometriotic cysts

Endometriotic cysts develop from endometrial cells (lining of the uterus) abnormally present in the ovary. It is an inflammatory reaction that would be the cause of the formation of the cyst.


As for cysts called cystadenomas, we do not know the cause, except that they occur preferentially in women aged 13 to 45 years.

Want to share, share your experience or need advice? See you in our FORUMS Gynecology or A doctor answers you !

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