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Vascular Malformations and Hemangiomas

What are hemangiomas and vascular malformations?


Hemangiomas are growths of blood vessels. They’re also called birthmarks. But they often can't be seen at birth. They usually form in the first few weeks of life.

These growths often start as faint red marks. They are the most common type of noncancerous (benign) skin growths. Females are 3 times more likely to get them than males.

About 6 in 10 hemangiomas are in the head or neck area. Most will keep growing for the first 6 to 12 months of life. Then they start to shrink.

Vascular malformations 

Vascular malformations are also growths of blood vessels. They also are noncancerous. They are present at birth. They’re also called birthmarks. But they may not be seen for months or weeks after birth. They grow slowly throughout life. They don’t shrink.

There are 5 types of vascular malformations. They are:

  • Port wine stains (red or purple in color)
  • Venous malformations
  • Lymphatic malformations
  • Arteriovenous malformations
  • Mixed malformations, a combination of any of the other types

What causes hemangiomas and vascular malformations?

The cause of hemangiomas and vascular malformations often isn’t known. They may be passed on (inherited) in some families.

The way they’re passed on is called autosomal dominant inheritance. This means that only one parent needs to have the gene to pass it on. If the parent has the gene, the family has a 1 in 2 chance that each child will have this condition.

What are the symptoms of hemangiomas and vascular malformations?

Hemangiomas start as faint, red birthmarks. Then they grow very fast. Over time, they become smaller and lighter in color.

Vascular malformations are also birthmarks. They grow much more slowly than hemangiomas. They don’t shrink.

How are hemangiomas and vascular malformations diagnosed?

Your child’s healthcare provider will diagnose your child’s skin growth. The diagnosis will be based on how it looks and if it changes over time. Your child may need to have an ultrasound. This can help his or her healthcare provider make the diagnosis.

How are hemangiomas and vascular malformations treated?

Treatment will depend on your child’s symptoms, age, and general health. It will also depend on how severe the condition is.

Treatment for hemangiomas depends on their size, location, and how severe they are. Small hemangiomas often shrink on their own. These usually don’t need treatment.

If your child has a hemangioma near his or her eyes or airway, it may need to be treated. Your child’s healthcare provider may suggest the following:  

  • Steroid medicines
  • Injection into the hemangioma (blood vessel embolization)
  • Laser or surgical removal

Treatment for vascular malformations depends on the type of malformation. If your child has a large or life-threatening growth, he or she may need a team of doctors. These can include plastic surgeons, skin doctors (dermatologists), eye doctors (ophthalmologists), and other specialists. Your child may need a combination of treatments. These may include:

  • Laser therapy. This is used for port wine stains.
  • Injection into the vascular malformation. This is used for arterial malformations.
  • Injection of a clotting (sclerosing) medicine. This is used for venous malformations.

What are the complications of hemangiomas and vascular malformations?

These conditions can be life-threatening if they’re large or affect your child’s airway or another organ. A hemangioma can also be serious if it has uncontrollable bleeding.

Depending on where your child’s growth is located, it may cause physical problems. Your child may have trouble seeing or moving part of his or her body.

Living with hemangiomas and vascular malformations

Hemangiomas may grow until your child is about 12 months of age. Then they start to shrink. In many cases, they will go away without treatment.

Other hemangiomas need to be treated. These should be treated by a craniofacial doctor. This is a specialist in diagnosing and treating head and face problems. Make sure your child’s doctor has experience with hemangiomas.

Vascular malformations don’t shrink or go away without treatment. Your child should see a craniofacial doctor with experience in treating vascular malformations.

Noticeable hemangiomas and vascular malformations can cause psychological and social issues. Support groups can help you, your child, and your family. Ask your child’s healthcare provider about support groups in your area.

When should I call my child's healthcare provider?

Call your child’s healthcare provider if your child’s hemangioma or vascular malformation causes issues. These include bleeding or trouble with feeding or breathing.

Key points about hemangiomas and vascular malformations

  • Hemangiomas and vascular malformations are noncancerous growths. They show up at birth or soon after birth. They’re also called birthmarks.
  • The cause of these growths often isn’t known. They may run in some families.  
  • Hemangiomas grow quickly after birth. Then they start to shrink. They may go away without treatment.
  • Vascular malformations grow slowly throughout life. They don’t shrink. They usually require treatment.
  • Some children with noticeable growths have psychological or social issues. Support groups can help these children.

Next steps

Tips to help you get the most from a visit to your child’s healthcare provider:

  • Know the reason for the visit and what you want to happen.
  • Before your visit, write down questions you want answered.
  • At the visit, write down the name of a new diagnosis, and any new medicines, treatments, or tests. Also write down any new instructions your provider gives you for your child.
  • Know why a new medicine or treatment is prescribed and how it will help your child. Also know what the side effects are.
  • Ask if your child’s condition can be treated in other ways.
  • Know why a test or procedure is recommended and what the results could mean.
  • Know what to expect if your child does not take the medicine or have the test or procedure.
  • If your child has a follow-up appointment, write down the date, time, and purpose for that visit.
  • Know how you can contact your child’s provider after office hours. This is important if your child becomes ill and you have questions or need advice.
Vascular Malformations and Hemangiomas - WellSpan Health

Online Medical Reviewer: Freeborn, Donna, PhD, CNM, FNP
Online Medical Reviewer: Holloway, Beth, RN, M.Ed.
Last Review Date: 2015-04-20T00:00:00
Last Modified Date: 2016-07-28T00:00:00
Published Date: 2016-07-28T00:00:00
Last Review Date: 2007-03-30T00:00:00
© 2016 WellSpan Health. All Rights Reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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