A benign ovarian mass includes functional cysts and tumours. Most do not produce symptoms.
Functional cysts are found mostly in fertile-age women and resolve over days or weeks. They are less than 5cm in diameter.
- Follicular cysts – cysts that develop from graafian follicles
- Corpus luteum cysts – cysts that develop from the corpus luteum
Ovarian cysts are most commonly associated with polycystic ovarian syndrome (PCOS), and is a clinical syndrome, not just defined by ovarian cysts.
Benign ovarian tumours
These tumours are typically slow-growing and rarely malignant.