Ovarian cyst

Also called Cyst on the ovary

An ovarian cyst is a fluid-filled sac that develops on an ovary. They are very common. Most are linked to the menstrual cycle (functional cysts), are not cancer and go away within a few months. Other types can be linked to conditions like endometriosis, and cysts after the menopause are checked more closely.

Last updated Nov 9, 2026

What it is

Many cysts cause no symptoms and are found by chance on a scan. A repeat scan is often done to check it has gone.

Large cysts, cysts that cause symptoms or cysts that look unusual may be removed with surgery, often by keyhole surgery.

Common signs

  • Often no symptoms
  • Pelvic pain, which can be dull or sharp
  • Pain during sex
  • Bloating or a feeling of fullness
  • Changes to periods
  • Needing to pee often

How it is usually diagnosed

  • Ultrasound scan, often through the vagina
  • Blood tests, sometimes including CA125

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Ultrasound reports, including repeat scans
  • Blood test results
  • Gynaecology letters
  • Surgery and pathology reports

Questions to ask your doctor

  • What type of cyst is it?
  • Does it need another scan, and when?
  • Would you recommend removing it?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Sudden, severe pelvic pain, especially with fever or being sick: get urgent help, call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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