What are the Rotterdam PCOS phenotypes?

Four phenotypes exist: (A) all three criteria met; (B) anovulation + hyperandrogenism; (C) hyperandrogenism + polycystic morphology; (D) anovulation + polycystic morphology without hyperandrogenism. Phenotype A/B have worse metabolic outcomes.

What ultrasound findings define polycystic ovary morphology?

Per updated 2018 criteria using modern transducers: 20 or more follicles per ovary (2-9 mm) or ovarian volume above 10 mL on either ovary. Older Rotterdam criteria (2003) used 12 or more follicles per ovary.

When should PCOS not be diagnosed?

PCOS is a diagnosis of exclusion. Other conditions causing similar features must be ruled out: congenital adrenal hyperplasia (measure 17-OH progesterone), Cushing syndrome, androgen-secreting tumors, thyroid disease, and hyperprolactinemia.

PCOS Rotterdam Criteria

Diagnose PCOS using Rotterdam 2003 criteria: diagnosis requires 2 of 3: (1) oligo/anovulation, (2) clinical/biochemical hyperandrogenism, (3) polycystic ovaries on ultrasound (12+ follicles or ovarian volume above 10 mL).

Use the full interactive calculator below, or

Related Calculators

AMH Ovarian Reserve

Medical

SHBG / FAI

Medical

Free Testosterone

Medical

PCOS Rotterdam Criteria

Related Calculators

Frequently Asked Questions

What are the Rotterdam PCOS phenotypes?

What ultrasound findings define polycystic ovary morphology?

When should PCOS not be diagnosed?