Final answer:
Functional ovarian cysts are common and typically not cancerous, consisting of follicular cysts, which occur when a follicle doesn't release an egg, and corpus luteum cysts, which form after the egg is released but the follicle doesn't close properly.
Step-by-step explanation:
The two types of functional ovarian cysts are follicular cysts and corpus luteum cysts. Follicular cysts form when the follicle fails to break open and release an egg during ovulation, leading to the development of a cyst. On the other hand, corpus luteum cysts occur after an egg has been released; if the opening through which the egg is released seals off, additional fluid can develop inside the follicle, causing a cyst.
Ovarian cysts are common in women during their reproductive years. Most of these cysts are not cancerous and do not require surgical removal. They can, however, sometimes cause symptoms such as pelvic pain, bloating, or pressure. Another condition related to multiple ovarian cysts is polycystic ovary syndrome (PCOS), which involves the growth of numerous small cysts on the ovaries and is associated with a range of symptoms and reproductive issues.