"The main reason is that it is a misnomer. Not only can people have the condition without having polycystic ovaries, but the condition does not involve cysts.
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In particular PMOS reflects the long-term, complex nature of the health condition, emphasising that it is a hormonal or “endocrine” disorder that can affect the body’s reproductive and metabolic systems and is associated with multiple health conditions."

What is PCOS, what are the symptoms and treatment, and why is it being renamed PMOS?
Polycystic ovary syndrome is being relabelled polyendocrine metabolic ovarian syndrome to correct the misconception that it is solely a gynaecological disease that creates ovarian cysts. Here’s what you need to know about the condition



