Ovarian Cysts and Endometriosis

Ovarian cysts are enlargements of the ovary that appear to be filled with fluid. They can be a simple fluid filled bleb or contain complex internal structures. The term cyst is used to differentiate them from solid enlargements. Simple cysts have no internal structures and are less worrisome than those with complex structures or solid components. A sonogram or ultrasound test can determine if a cyst is simple or complex.