What is meant by polycystic ovaries?

Big/ High follicle #: Polycystic ovaries (pco) is a finding on ultrasound scan of one or both ovaries being bigger than normal and/or having a high number of small egg-containing 'antral follicles'. Pcos or polycystic ovarian syndrome needs 2 out of 3 of: 1. Irregular cycles 2. Clinical or blood test signs of too much male hormones - acne, hair growth and 3. Pco. Up to 20% of women have pco, about 8-10% have pcos.