Functional ovarian cysts?
Follicle cysts: Follicular cysts contain a follicle that has failed to rupture and filled with more fluid.
Corpus luteum cysts: Corpus luteum cysts occur when the follicle ruptures to release the egg, but seals up and swells with fluid. These cysts are painful and cause bleeding. When bleeding occurs in a functional cyst, is termed as hemorrhagic cyst.
Complex Ovarian Cysts
Some types of ovarian cysts can be associated with endometriosis, polycystic ovarian syndrome (POS) and other conditions. Polycystic ovaries occur when the ovaries are too large and contain multiple tiny cysts on the outer edges.
Non-cancerous growths which develop from the outer lining tissue of the ovaries (cystadenomas), some cysts can also develop when the uterine lining tissue grows outside the uterus and adheres to the ovaries (endometrioma).