"Many women develop growths, known as ‘cysts’, in or on their ovaries. These cysts are fluid- (water-) filled sacs (rather like a blister). In some women cysts are completely harmless, requiring little or no treatment. These cysts are ‘benign’, or non-cancerous. Other cysts, however, can be cancerous, which is why a diagnosis is extremely important when ovarian cysts are suspected. Cysts can vary in size. They are normally small, which means that you may not even know you have one until a routine examination picks it up. However, some are large enough to cause menstrual irregularities or discomfort.
What are ovarian cysts?
"There are two main types of ovarian cysts..."