Middle aged woman

Ovarian cancer

About 400 women in Ireland each year are diagnosed with ovarian cancer.

The main treatment for ovarian cancer is surgery. Other treatments include chemotherapy and radiotherapy.

On this page:

What is ovarian cancer?

Ovarian cancer is when the normal cells in the ovary change and grow to form a tumour. 

Because the ovaries are deep in the pelvis, if the tumour gets bigger it may affect nearby organs. This can include the bladder or the bowel. This in turn can lead to symptoms.

Ovarian cancer is the fourth most common cancer in women. Each year about 400 women are diagnosed with it in Ireland.

What are the ovaries and what do they do?

The ovaries are part of the female reproductive system. They are two small oval-shaped organs on each side of your womb in your lower abdomen (pelvis). 

Each month, if you are fertile, an egg is made in one of your ovaries. The egg leaves your ovary and passes down a tube called the fallopian tube to your womb. If the egg is not fertilised by sperm, it leaves your womb with the lining of the womb. This happens as part of a monthly cycle known as a period (menstruation). The ovaries make the female sex hormones, oestrogen and progesterone, which control your periods. 

You are fertile from the age when periods starts (puberty) to when they stop (menopause). During the menopause less hormones are made, so periods gradually stop.


We use the term ‘woman / women’ in our ovarian cancer information but we understand that not everyone who has ovaries identifies as a woman. 

Whoever you are, wherever you come from, we are here for you. For confidential advice, information and support, contact our Support Line on Freephone 1800 200 700.

This is GO

For more information on ovarian cancer, you can also look at This is GO, which gives tailored information for people worried about ovarian cancer, people diagnosed with ovarian cancer and for friends and relatives. This is GO is part of the Women's Health Initiative, a research project supported by the Irish Cancer Society.


Looking for support?

Our cancer support section contains information and advice on coping with cancer for diagnosed patients and their loved ones.

Publications about ovarian cancer
Downloadable booklets and factsheets

For more information

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1800 200 700

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