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Question

Please may I have some information about Baker cyst in children?

Answer

A Baker cyst, also called a popliteal cyst, is commonly seen in older children.

It occurs at the back of the knee, the popliteal fossa. It results from a build up of fluid in a tendon sheath, or the knee joint, where the muscles attach at the back of the knee.

X-rays of the knee will be normal.

The diagnosis can be confirmed by ultrasound, or by aspirating some fluid from the cyst.

Treatment is by observation, particularly in children of ten or younger, because these cysts generally go away on their own.

Surgery is usually only necessary if the cyst is getting progressively bigger, or the child has severe symptoms.

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