Probably not – most ovarian cysts are benign, which means they aren’t cancerous.
About one in 1,000 ovarian cysts are found to be cancerous in women who have not yet gone through the menopause.
About three in 1,000 ovarian cysts turn out to be cancerous in women over the age of 50.
You’ll have a number of tests to check whether your ovarian cyst is benign or cancerous. For more information, see our section on diagnosis.