What is Gardner Syndrome?

Written by Medicover Team and Medically Reviewed by Dr Rohini Muriki , Gastroenterologists Medical


Gardner syndrome (Gardner's syndrome) is a rare condition that runs in families and can cause growths in different parts of the body. It's linked to changes in genes that make the body form extra lumps or tumors, some of which can turn cancerous if not treated early.

Gardner syndrome Key Features:

  • Gastrointestinal polyps
  • Abnormal teeth
  • Retinal pigment epithelium hypertrophy
  • Desmoid tumours
  • Extra-colonic manifestations
  • Neoplasms (osteomas)

The most serious concern is the colon polyps, which almost always become cancerous over time if they're not removed. That's why regular check-ups and early treatment are so important.

Gardner syndrome usually runs in families. If a parent has it, there's a 50% chance that their child will also have it. Because of this, doctors often recommend genetic testing for family members.

What Are Gardner Syndrome Symptoms?

Gardner syndrome is a condition that causes growths in the body, and knowing the symptoms early can really help you manage it better. This condition is often linked to the development of multiple growths in the colon (large intestine), but it can also show up in other parts of the body.

Common Symptoms of Gardner Syndrome Include:

Other Possible Signs:

  • Hard bumps (osteomas) on the jaw or skull
  • Skin cysts (small, firm lumps under the skin)
  • Dental problems (extra teeth or impacted teeth)
  • Growth in the soft tissues of the body

It usually runs in families, so if someone in your family has had it, it's good to watch for these signs of Gardner Syndrome. Many people don't notice anything at first because some symptoms can develop slowly over time. That's why regular check-ups matter if you're at risk.


What Are the Causes of Gardner Syndrome?

Gardner syndrome is a rare condition that runs in families. It's mainly caused by mutations (changes) in a specific APC gene. These gene changes make the body form many growths, called polyps, especially in the colon, and can also lead to other lumps under the skin or in bones.

In simple terms, you inherit this condition from your parents. If one parent has the gene change, there's a 50% chance of passing it to their child. Because of this, knowing your family history is really important.

What Are Other Conditions Linked to Gardner Syndrome?

People with Gardner syndrome may face more than just colon-related concerns. This condition can affect other parts of the body and lead to several different growths or tumors. Some of these are harmless, while others may need close medical attention.

Here are some conditions linked to Gardner syndrome:

  • Extra teeth or dental issues
  • Osteomas
  • Desmoid tumors
  • Lipomas
  • Fibromas
  • Adenomas
  • Epithelial cysts
  • CHRPE
  • Higher risk of cancers, including stomach, liver, and colon cancer

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How Is Gardner Syndrome Diagnosed?

Diagnosing Gardner syndrome involves a careful look at both your personal health and family history. Since it's often inherited, doctors will ask about any family members with colon polyps or certain types of cancers.

Your doctor will guide you through a few important steps to make sure you get the right diagnosis:

  • Medical History: Talking about any symptoms you've noticed, like belly pain, blood in stool, or unusual growths on the skin or bones.
  • Family History: Checking if close relatives have had colon cancer or multiple polyps.
  • Colonoscopy: A camera is used to look inside your colon for polyps. This is the main way to find and even remove them.
  • Genetic Testing: A simple blood test can check for changes in the APC gene, which is linked to Gardner syndrome.
  • Imaging Tests: X-rays, CT scans, or MRIs may be used to spot growths in other parts of the body, like bones or the abdomen.
  • Dental Check: Doctors might also look for extra teeth or jaw cysts, which are common with this syndrome.
  • Sigmoidoscopy
  • Endoscopy

How Is Gardner Syndrome Treated?

Treating Gardner syndrome depends on the problems you're facing, because it can affect people in different ways. Doctors will look at your symptoms and make a plan that suits you best. The goal is to manage the condition, prevent cancer, and help you stay healthy.

Here's how treatment usually works:

Dental Care

  • Some people develop extra teeth early on.
  • Dentists may remove these extra teeth.
  • Braces or other treatments can help straighten and align the remaining teeth.

Managing Desmoid Tumors

  • These are noncancerous growths that can still cause problems.
  • Doctors may use medication or chemotherapy to shrink them.
  • Sometimes treatment focuses on stopping them from growing bigger.

Cancer Screening and Prevention

  • Since Gardner syndrome is linked to a higher risk of colon cancer, regular check-ups are important.
  • Genetic tests can help find APC gene changes that increase cancer risk.
  • Doctors may recommend routine colonoscopies or other screenings to catch issues early.

Medication for Colon Polyps

  • Medicines can help slow the growth of colon polyps and lower cancer risk.
  • Medicines like certain pain relievers (for example, sulindac or celecoxib) can help slow the growth of colon polyps.

Surgery (if needed)

  • Colectomy: This procedure removes part or all of the colon if you have many polyps (usually 20-30 or more).
  • Proctocolectomy: This procedure removes the entire large intestine and most of the rectum for more severe cases.

Your healthcare team will explain these options and help you choose what's right for you, ensuring you receive the best care to stay safe and healthy.


When to See a Doctor for Gardner Syndrome?

It's important to know when you should talk to a doctor about Gardner syndrome. This condition can cause growths in the colon and other areas that may lead to serious health problems if not found early.

Consider seeing a doctor if you notice:

  • Family history of colon polyps or Gardner syndrome
  • Unexplained belly pain or cramps that keep coming back
  • Blood in stool or dark, tar-like bowel movements
  • Unusual lumps under the skin (especially on the scalp or jaw)
  • Dental issues like extra teeth or jaw cysts
  • Changes in bowel habits lasting more than a few days

If you have family members with this condition, regular check-ups and screenings are also important, even if you feel fine.


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What Is the Recovery Process After Gardner Syndrome Treatment?

Recovering from treatment for Gardner syndrome depends on the type of care you receive. Most people will need ongoing check-ups to stay healthy and catch any new growths early. It's normal to feel worried, but with the right plan, you can live well.

Here's what recovery usually involves:

  • Regular doctor visits and screenings
  • Watching for new polyps in the colon
  • Following a healthy diet to support digestion
  • Caring for any surgical sites if surgery was done

What are the Complications of Gardner Syndrome?

Gardner syndrome can lead to some challenges if not managed carefully, but there are ways to lower the risks. It helps to know what to watch for and how to stay ahead of it.

Possible complications include:

  • Colon cancer occurs when polyps aren't removed
  • Growths on bones or skin
  • Blockages in the intestines
  • Discomfort after surgery

Our Experience in Treating Gardner Syndrome

At Medicover, we know that hearing a diagnosis like Gardner syndrome can feel scary and confusing. Gardner syndrome is a rare condition that leads to growths called polyps in the colon and other areas.

These polyps can become cancerous if not treated early, so we focus on regular screening and personalised treatment plans to help prevent serious problems.

We believe in simple, clear communication so you know exactly what's happening and why. Our team listens to your concerns and guides you through each step of treatment.


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Frequently Asked Questions

Without treatment, Gardner's syndrome may reduce life expectancy due to a high risk of colon cancer, often developing by age 39. With proactive management, including regular screenings and surgeries like colectomy, life expectancy can approach normal.

Dental abnormalities occur in 30-75% of patients, including extra or missing teeth, impacted teeth, odontomas, and jaw osteomas. These can cause misalignment, pain, or infection, often requiring surgical or orthodontic intervention.

It leads to multiple polyps in the colon and rectum, benign tumors like osteomas in bones, and soft tissue tumors such as desmoid tumors or epidermoid cysts.

Individuals with a family history of Gardner syndrome or familial adenomatous polyposis (FAP) are at higher risk, particularly if a parent carries the APC gene mutation.

Yes, genetic testing and regular screenings like colonoscopies can identify the condition in at-risk individuals before symptoms develop.

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