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Fertility Glossary

Endometrioma

An ovarian cyst caused by endometriosis.

Female fertility

Sometimes called 'chocolate cysts', endometriomas can affect ovarian reserve. Whether to remove them before IVF is decided case by case, because surgery can also reduce reserve.

Also known as: chocolate cyst, endometriotic cyst

Related United Kingdom guides

Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.

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