In the absence of pregnancy, the corpus luteum lasts 14 days and then dissolves. If for whatever reason it does not dissolve, this condition can lead to a corpus luteum cyst. In cases where the corpus luteum continues to grow, reaching a diameter of up to 3 cm, the tumor can cause dull pain on one side of the pelvis or can rupture, causing acute abdominal pain and heavy bleeding.

Ovarian cysts are fluid-filled sacs that are located in or on the surface of an ovary. Every woman has two ovaries and is at risk of developing an ovarian cyst at some point in her life. However, unlike functional ovarian cysts, organic ovarian cysts do not change with the menstrual cycle and are often more dangerous.