An ovarian cyst is an asymptomatic adnexal mass, which is most often a result of normal ovarian physiological function. This is called a functional cyst. But at times these masses become symptomatic which would require further evaluation and possible treatment. Cysts develop when an ovarian follicle does not rupture during its maturation, and normal ovulation does not occur. When this happens, a follicular cyst will develop and eventually lengthens the phase of the cycle. These cysts are lined with normal granulosa cells and contain liquid within them, which is rich in estrogen. If these cysts enlarge enough to cause abdominal pain, or continues to persist beyond one menstrual interval, only then would it be clinically significant. Most ovarian cysts are benign, harmless but cause severe pain.