Functional Cysts
Functional cysts are the most common type of ovarian cyst and aren’t disease-related. They occur as a result of ovulation. These cysts can be a sign that your ovaries are functioning as they should. Typically, functional cysts will shrink over time, usually within 60 days, without specific treatment.
- Follicular cysts: A follicle is a small sac in your ovary that releases an egg each month as part of your menstrual cycle. A follicular cyst occurs when the follicle doesn’t release an egg. Instead, the follicle fills with fluid and grows bigger.
- Corpus luteum cysts: After the release of an egg, a hormone-producing group of cells called the is formed. A cyst forms when fluid collects in the corpus luteum, causing it to grow.
Functional cysts can also be referred to as simple cysts.