An ultrasound report mentioning an ovarian cyst is alarming in a way the finding usually does not warrant. Most are benign, many resolve on their own, and the assessment follows a well-established process. What changes the picture is whether you are still ovulating — which is exactly what is uncertain during the transition.

Where we stand: Menova is an independent publication. We sell no tests, we are not your doctor, and this is general education, not a diagnosis. Any cyst must be assessed by your own clinician.

The main distinction

Functional cysts form as part of the ovulation cycle — a follicle that does not release its egg, or a corpus luteum that fills with fluid. They are common, usually harmless, and typically resolve within a couple of cycles.

They require ovulation, which is why they become less common as you move through the transition and stop occurring after menopause.

Non-functional cysts are everything else, and are assessed on their own characteristics rather than assumed to resolve.

The practical consequence: a simple cyst in a woman still cycling is often watched and rechecked. The same finding after menopause is taken more seriously, because the benign explanation no longer applies.

What is usually found

  • Simple cysts — thin-walled, fluid-filled, no solid areas. Very common and usually benign, including after menopause when small
  • Haemorrhagic cysts — a functional cyst that has bled into itself. Painful, and usually resolves
  • Endometriomas — associated with endometriosis; see endometriosis and adenomyosis in perimenopause
  • Dermoid cysts, benign and often present for years
  • Cystadenomas, usually benign
  • Polycystic ovaries, which is a different entity from a cyst — see PCOS and menopause

How they are assessed

  • Ultrasound, usually transvaginal, describing size, whether it is simple or complex, and whether there are solid areas, thick walls, septations, or blood flow. These features do most of the work
  • CA-125, a blood test used alongside imaging in some situations. Interpreted very differently before and after menopause — it rises with fibroids, endometriosis, inflammation and even menstruation, so it is unreliable as a standalone test in premenopausal women
  • Repeat scan after an interval, which is often the whole plan for a simple cyst
  • Referral to gynaecology, where features are complex or the cyst is large

What is usually done

  • Small simple cysts, still cycling — often rescanned in a few months, and frequently gone
  • Small simple cysts after menopause — often monitored, with a threshold for further assessment
  • Persistent, large, complex or growing cysts — surgical assessment, often keyhole
  • Symptomatic cysts — treated on symptoms

The hormonal pill is sometimes used to prevent new functional cysts forming, though it does not shrink an existing one.

Symptoms that need urgent care

Two complications are emergencies:

Torsion — the ovary twisting on its blood supply. Sudden severe one-sided pelvic pain, often with nausea and vomiting. This needs emergency assessment; the ovary can be saved if treated quickly.

Rupture — sudden severe pain, sometimes with dizziness, fainting, or a racing heart, which can indicate internal bleeding. Emergency.

Do not wait these out.

The symptoms that get dismissed

This is the part that matters most in this article.

Ovarian cancer symptoms are vague, they overlap almost entirely with ordinary digestive complaints, and they are routinely attributed to diet, IBS, or menopause. See a clinician if you have, most days for three weeks or more:

  • Persistent bloating, or a feeling of increased abdominal size
  • Feeling full quickly, or difficulty eating
  • Pelvic or abdominal pain
  • Needing to pass urine more urgently or often

Also: unexplained weight loss, change in bowel habit, extreme fatigue, or any bleeding after menopause — see bleeding after menopause.

Most women with these symptoms do not have ovarian cancer. But these are the symptoms, they are what gets missed, and asking is a single appointment. Our discussion of the digestive overlap is in the gut microbiome in menopause and IBS and menopause.

Say the sentence directly: "I've had persistent bloating most days for six weeks. I'd like ovarian cancer excluded." It is not dramatic; it is the recommended route.

Family history matters here

Mention it explicitly, including ages at diagnosis:

  • Ovarian, breast, bowel or uterine cancer in relatives
  • Known BRCA1, BRCA2, or Lynch syndrome in the family

This can change your assessment, your screening, and your eligibility for genetic testing — see family history and menopause.

Cysts and hormone therapy

Having a benign ovarian cyst does not generally prevent hormone therapy, though an undiagnosed pelvic mass would normally be investigated first.

Hormone therapy does not cause functional cysts — those require ovulation, which HRT does not produce. If a cyst is found while you are on treatment, it is assessed on its own features, and telling the sonographer exactly what you take matters for interpretation. See HRT risks and benefits.

What to ask

  • "Is this a simple or a complex cyst?"
  • "What size, and are there any concerning features?"
  • "Am I being treated as premenopausal or postmenopausal for the purposes of this assessment?"
  • "What is the plan — rescan when, or referral?"
  • "What symptoms should bring me back sooner?"

That last question converts anxiety into a decision rule, which is what most people actually need.

Our free printable visit prep sheet gives you a page for the questions and your family history, and the free 30-day symptom tracker records the bloating-and-pain pattern that drives the referral.

The free 2-minute Menova self-check organizes your wider symptom picture — no account, not a diagnosis, and your answers never leave your device.

This article is general education, not medical advice or a diagnosis. Seek emergency care for sudden severe pelvic pain, fainting, or severe pain with vomiting. Persistent bloating or pelvic symptoms lasting three weeks or more should be assessed promptly by a licensed clinician.

Sources: National Cancer Institute — Ovarian Cancer, ACOG — Ovarian Cysts, NHS — Ovarian Cyst, and The Menopause Society.