An international consensus process endorsed by 56 professional and patient organisations has renamed polycystic ovary syndrome as polyendocrine metabolic ovarian syndrome. The reasoning is that the ovarian appearance reflects arrested antral follicles rather than pathological cysts, and that the old name pushed a lifelong endocrine-metabolic condition into an ovarian, fertility-centred box.
Diagnostic criteria are unchanged: two of three from irregular cycles with ovulatory dysfunction, clinical or biochemical hyperandrogenism, and raised anti-Mullerian hormone or multiple follicles on ultrasound in adults. What changes is the frame, and for obstetricians that frame has teeth. The condition affects about 10% to 13% of reproductive-age women and is linked to higher risks of miscarriage, gestational diabetes, hypertensive disorders of pregnancy, caesarean delivery, preterm birth, fetal growth restriction, low birthweight and small-for-gestational-age infants, with many associations persisting after adjustment for age and body mass index.
The practical gap named in the report is documentation. The diagnosis is often not captured as an obstetric risk modifier at the first visit and is not built into antenatal pathways, so the extra glucose screening, blood pressure vigilance and growth surveillance it should trigger depend on whoever happens to remember. Start using the new name in notes and letters, and put the diagnosis where the antenatal team will see it.
- Ask about pre-pregnancy cycle irregularity and hyperandrogenism at booking, not just at fertility visits
- Record the diagnosis in the antenatal problem list so screening is triggered, not recalled
- Plan earlier or repeated glucose testing and blood pressure review in these pregnancies
- Screen for psychological morbidity - it is part of the condition, not a reaction to it
- Use both names in patient-facing material for a while so women recognise their own diagnosis
Why it matters
A rename is cosmetic until the diagnosis starts appearing in the antenatal record - which is exactly where it has been missing.
Don't overread it
This is a consensus terminology change and a narrative report, not new outcome data; the criteria and the underlying risk estimates are unchanged.
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