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Baker's cyst in children

Popliteal cyst

A Baker's cyst is a fluid-filled lump that can develop behind your child's knee — we can help treat it

About

A Baker's cyst is a visible, fluid-filled lump which can form at the back of your child's knee. It happens when there is an extra build-up of fluid inside the bursa (small sac of fluid) between the calf and knee joint. Also known as popliteal cysts, they're quite common in boys between four to eight years old.

Need to know

  • Symptoms of a Baker's cyst in children icon plus

    Usually, a child with a cyst will have no symptoms other than the visible lump at the back of their knee. This lump normally goes away on its own. In other cases, a Baker's cyst may lead to other symptoms, like:

    • a feeling of tightness behind the knee
    • a build-up of fluid around the knee
    • pain in the calf and knee
    • an ache in the knee
    • clicking in the knee
  • Diagnosis icon plus

    Your GP or consultant will usually be able to make a diagnosis by discussing your child's symptoms and examining the cyst. They will let you know if they need to carry out further tests to rule out other conditions. These tests might include an MRI or ultrasound scan.
  • Potential treatment options icon plus

    If your child's cyst isn't causing any symptoms, treatment may not be necessary, as the cyst will often go away on its own. Your GP or consultant may recommend over-the-counter medicines or advise you on how to treat the cyst at home. Depending on the nature of your child's cyst, your GP or consultant may recommend draining the cyst or surgery (if the cyst has caused any significant damage around the knee).
Consultant in theatres

Our consultants

We're proud to work with leading experts across a range of medical fields, whose skills are matched by their integrity and compassion.

Our facilities

From complex surgery to straightforward procedures, we provide exceptional care across our network of hospitals, outpatient centres and specialist clinics.

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    The Princess Grace Hospital

    42-52 Nottingham Place

    London W1U 5NY

    Appointments 020 3131 7216
    Enquiries 020 3130 6833

  • Wellington-south-hero-facility-582-582

    The Wellington Hospital

    Wellington Place

    London NW8 9LE

    Appointments 0207 483 5148
    Enquiries 020 3131 7478

  • London Bridge Hospital Facility

    London Bridge Hospital

    27 Tooley Street

    London

    SE1 2PR

    Appointments and Enquiries 020 7234 2009
    Imaging Appointments 020 7234 2773
    Switchboard 020 7407 3100

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    The Harley Street Clinic

    35 Weymouth Street

    London

    W1G 8BJ

    Appointments 020 7034 8181
    Enquiries 020 3131 7962

  • The Lister Hospital Facility

    The Lister Hospital

    Chelsea Bridge Road

    London

    SW1W 8RH

    Appointments 020 7811 4000
    Enquiries 020 3131 4978

  • The Portland Hospital Facility

    The Portland Hospital

    205 - 209 Great Portland Street

    London

    W1W 5AH

    Children's enquiries 020 7390 8020
    Maternity enquiries 020 7390 6068
    Gynaecology enquiries 020 7390 6200

Request an appointment

We're happy to help you make an appointment with one of our experienced consultants.

This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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