Final answer:
The most commonly identified ovarian cyst is the functional cyst, which includes follicular and corpus luteum cysts, and is usually benign. PCOS involves multiple cysts and can lead to a diagnosis when accompanied by additional symptoms. Cysts in general can occur in any organ but are most common in the ovaries, subcutaneous tissue, brain, and eyes.
Step-by-step explanation:
The most commonly identified ovarian cyst is the so-called 'functional cyst.' Ovarian cysts are sacs filled with fluid or other material that develop on or within one or both ovaries. These cysts are usually harmless and often resolve on their own. The two main types of functional cysts include follicular cysts, which form when the follicle does not release an egg, and corpus luteum cysts, which occur after the follicle releases the egg and the empty follicle sac does not shrink but instead seals off and accumulates fluid. Polycystic Ovary Syndrome (PCOS) is a condition where many small cysts form in the ovaries, as a result of follicles that do not release an egg during ovulation. Although not all ovarian cysts are indicative of PCOS, the presence of multiple cysts along with other symptoms may lead to a diagnosis of this syndrome.
Ovarian cysts can present various symptoms such as pain, bloating, or pressure, but they are not always cancerous. In fact, most cysts are benign and may not require any intervention unless they become very large or painful, in which case surgical removal might be considered. The occurrence of cysts in general is not rare and they can develop in any organ, however, their presence is most commonly noted in subcutaneous tissue, the brain, and eyes, apart from the ovaries.