Craniofacial Microsomia
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What is craniofacial microsomia?
Children with craniofacial microsomia (CFM) are born with facial features that are smaller than expected. Usually, CFM affects the ears and jaw. It also can affect the eyes, cheeks and bones of the neck. Microsomia is pronounced my-kruh-SO-mee-uh and means small (“micro”) body part (“somia”).
CFM is the second most common birth condition affecting the face. The most common is cleft lip or palate.
Seattle Children’s researchers are working on a standard way to diagnose the condition. This should give doctors a clearer idea of how many children have CFM. Now, estimates range from 1 in 5,600 to 1 in 26,550 newborns.
What causes craniofacial microsomia?
Doctors do not know why children are born with craniofacial microsomia. We know that something changes the development of the face starting in early pregnancy. The factors that go into CFM are complex. It may be caused by a mix of genetic and environmental factors.
Some children with CFM have changes in certain genes. These can be new changes that happened in the child or changes passed down from parents (inherited). For most children, craniofacial microsomia is not inherited.
Certain medicines taken during pregnancy may increase the chances of having a child with CFM, but this is not common. If you have questions about any medicines, talk with your doctor.
People who have a child with CFM have a slightly higher chance (2% to 3%) of having another child with similar differences. In rare cases, some families have an even higher chance.
For children who have relatives with similar facial differences, we recommend a visit with a counselor at our Craniofacial Genetics Clinic.
Craniofacial Microsomia Care at Seattle Children's
What are the symptoms of craniofacial microsomia?
Most babies with CFM have facial differences. The ears and jaw are affected most often.
These differences can cause problems with feeding, breathing, chewing, hearing or speech.
Children with craniofacial microsomia may have the following differences. The symptoms may be mild or severe.
Ears
- Small ears (microtia) or missing ears (anotia)
- Missing ear canal (aural atresia)
- Hearing loss
Face
- One side of the face looks different than the other (asymmetry)
- Difficulty moving muscles of the face (facial palsy)
- Small cheekbones
- Wide mouth caused by a cleft along the corner of the mouth (macrostomia)
- Cleft lip and/or palate
- Tags of skin in front of the ear or on the face
- Pinkish-white growth on the eye (epibulbar dermoid)
- Small eyes that didn’t form in the usual way (microphthalmia)
Jaw and teeth
- Limited opening of the mouth (trismus)
- Short lower jaw
- Crooked lower jaw
- Teeth that do not fit together well (malocclusion)
Less often, craniofacial microsomia affects the spine, kidneys, heart or other parts of the body.
How is craniofacial microsomia diagnosed?
To diagnose this condition, your child’s doctor will examine your child’s face and head carefully. Your child’s ears, face, jaw and teeth will help the doctor tell if they have CFM or another condition.
and CT (computed tomography) scans can give the doctor more details and help us plan the best treatment for your child. For some children, genetic testing may be helpful.
Craniofacial microsomia has many other names. It also is called:
- Hemifacial microsomia
- First and second branchial arch syndrome
- Otomandibular dysostosis
- Oculo-auriculo-vertebral sequence
- Facio-auriculo-vertebral syndrome
- Goldenhar syndrome
- Lateral facial dysplasia
How is craniofacial microsomia treated?
Our team is skilled at providing all types of care your child may need, including complex craniofacial surgery to enlarge and align their jaws, reshape or rebuild their ears, improve hearing or treat a cleft lip or palate.
There is no single treatment plan for CFM. The options that we discuss with you will depend on your child’s age and how CFM affects them. Based on your child’s needs, our specialists provide a wide range of services to help with breathing, feeding, hearing and other ear differences; how the face looks and works; jaw and teeth alignment, speech, vision, spine problems; and other concerns.
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Treatment to ease breathing
Babies with very small jaws may have breathing problems. If this is the case for your baby, your child’s doctors will discuss the options to manage and correct the cause.
Examples are:
- Ways to help position your baby so they can breathe more easily
- Surgery to lengthen the jaw and move it forward
- For severe breathing problems, placing a breathing tube in the windpipe (tracheostomy)
Sometimes children have trouble breathing while they sleep (obstructive sleep apnea). Over time, this may lead to problems with how the heart and lungs work. It also can add to problems with learning and behavior.
We will ask questions during clinic visits to check if breathing is a problem for your child. To better understand their breathing patterns, we may monitor your child overnight in our sleep lab.
The treatment options and timing will depend on your child.
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Feeding help and cleft repair
Some babies with CFM have 1 of these conditions, which may affect their feeding:
- Small jaw
- Cleft lip
- An opening in the roof of their mouth (cleft palate)
- Cleft in the side of the mouth (macrostomia)
Your baby may not be able to breastfeed/chestfeed or use regular bottles. We help you with feeding techniques during infancy.
We will check regularly to make sure that your baby is gaining weight. A dietitian may see you in the clinic to help with your child’s diet.
If your baby has a cleft lip or palate, our surgeon will talk with you about surgeries.
- Cleft lip surgery usually takes place when a baby is 3 to 4 months old.
- Cleft palate surgery usually happens at about 1 year.
Learn more about cleft lip and palate treatments.
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Evaluating and treating hearing loss
At least half of children with craniofacial microsomia have hearing loss. They may have:
- Ear canals that are missing or very narrow
- Problems with the 3 bones in the middle ear that transmit sound
- Problems with the inner ear
- Nerve or brain processing delays related to hearing
Most often, babies’ hearing is screened in the hospital soon after birth or within a few days.
If problems are found, we do further testing. A specialist trained to test hearing in infants and children (audiologist) will perform the tests.
As your child grows, they will have a variety of hearing tests based on their hearing status and ear health.
Our ear, nose and throat specialist (otolaryngologist) and audiologist will talk with you and your child about hearing. This includes:
- If your child can benefit from hearing aids
- How to prevent further hearing loss
- The best place to sit in the classroom when your child reaches school age
The small size of the outer ear may make it hard for your child to wear hearing aids. One option might be hearing aids anchored to the bone with a tiny screw.
Your child may need a CT (computed tomography) scan to see their middle and inner ear. We do this when your child is about 5 years old. At that age, the ear is almost fully grown. CT scans help doctors decide if surgery is likely to help restore hearing.
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Treatment options for ear differences
Many children with craniofacial microsomia have ears that are small, not the usual shape or missing. This is called microtia (PDF). Our Otolaryngology Program is 1 of the few in the country to offer comprehensive treatment for microtia. Our team is skilled at rebuilding ears using synthetic (alloplastic) materials or cartilage from the child’s ribs (autologous). Our options also include a prosthetic ear that can be worn and taken off. Read more about microtia treatment.
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Improving face function and symmetry
CFM affects each child differently. We tailor treatment to your child’s and family’s needs.
Surgery for a cleft of the mouth
Some children with CFM have a cleft along the corner of the mouth. Muscles around their mouth are separated. This makes their mouth wider than is typical (macrostomia), which can make it hard to feed and form sounds for speech.
This can be treated by surgery that makes a complete ring of muscle around your child’s mouth.
- Surgeons carefully cut into the skin, the muscle and the tissue inside the mouth.
- They use a small zigzag cut (incision). This helps to hide any scars.
- Surgeons use nearby muscles to form a ring of muscle around your child’s mouth.
- They also bring the corners of the mouth closer together. This gives the mouth a more typical shape and function.
Facial reanimation for palsy
Some children with CFM have weakness or trouble moving their face. This is called facial palsy. It happens because the nerves in the face are not working right.
Often, facial palsy improves in the first few years of life.
If your child has severe problems with facial movement, your child’s team will include specialists from our Facial Reanimation Clinic. They will determine if surgery is likely to improve your child’s facial movement.
Options to improve facial symmetry
In about 65% of people with CFM, the 2 sides of their face look different (facial asymmetry).
If you or your child has concerns about how their face looks, talk to your child’s team. The treatment options depend on your child’s age. They range from counseling to surgery.
Skin tags
Some children with CFM have skin tags, most often in front of their ears. Skin tags are tiny extra pieces of skin. They may have a small narrow stalk connecting the skin bump to the surface of the skin, or they may be attached deeper below the skin. They are painless.
If your child has skin tags, your team will talk with you about whether to remove them.
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Aligning teeth and jaws
Many children with CFM have a small lower jawbone. This can cause problems with breathing.
Your child’s teeth may not fit together well. Some children also have a small upper jaw.
A dentist or orthodontist will check if your child’s teeth are too crowded or if they are missing some teeth. The orthodontist also checks how well the upper and lower jaws fit together.
Starting at about 6 years old, we will talk with you about the best treatment and timing for your child.
- Some children may need a dental appliance or braces for the best dental function and appearance — usually when they are a teenager but sometimes sooner.
- Your child might have orthodontics alone or along with surgery, based on their needs.
- Many children with CFM need orthodontics to properly align their teeth when their face and jaw are nearly done growing (age 13 to 16 years).
Learn more about craniofacial orthodontics.
Enlarging the jaw
Many children with a small jaw benefit from surgery to make their jaw longer (orthognathic surgery) and correct their bite. Our craniofacial orthodontist and craniofacial plastic surgeon work together to plan the best treatment for your child.
Your child's team may recommend:
- A bone graft to lengthen the jaw or to make a new jaw joint. A graft uses bone or cartilage from another part of the body. We first think about this option when your child is 4 to 7 years old.
- Mandible distraction to increase the size of your child’s lower jaw. See a series of photos that show how we used this option for a child with craniofacial microsomia.
- Le Fort I maxillary advancement if your child’s upper jaw needs to be larger and moved forward.
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Assessing and treating speech problems
Some children with CFM speak differently because of their physical differences (for example, with the jaw). Some children have a cleft lip or palate. In others, the muscles in the back of the mouth don’t work right. This is a type of velopharyngeal dysfunction (VPD).
VPD and clefting can affect your child’s ability to make speech sounds.
If you or your child's doctors have concerns about your child’s speech, your child will see a speech and language pathologist (SLP).
Treatment options may include:
- Speech therapy to help develop more normal speech patterns
- A custom-made speech appliance called an obturator
- Surgery if your child has a type of VPD called velopharyngeal insufficiency
Your child’s surgeon and SLP will work together to recommend what is best for your child.
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Monitoring eyes and vision
Some children with CFM have a pinkish-white growth on their eye (epibulbar dermoid). If your child does, an eye doctor (ophthalmologist) on our team will check your child’s eyes for other differences.
The doctor monitors the growth on the eye to make sure it does not affect your child’s sight. If it is large or getting in the way of vision, the doctor may recommend surgery to remove it.
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Assessing the spine
Some children with CFM have problems with the spine. Usually, the problem is in the neck, called the cervical spine.
Your child’s craniofacial pediatrician will order X-rays when the bones are well formed. This happens when your child is at least 3 years old.
If the X-rays show differences in the way your child’s bones fit together, the doctor will order more tests to get further details and see if your child needs treatment.
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Checking the kidneys and heart
Children with CFM have an increased chance of kidney problems. We recommend that all children with this condition have an of their kidneys when they begin treatment at Seattle Children’s.
We are looking to make sure that the kidneys formed in the typical way. If your child has a normal ultrasound, they will not need another one in the future.
This ultrasound usually takes less than 20 minutes. It does not require needle pokes or medicine.
It is rare for children with CFM to have problems with their heart. Your child’s doctor may decide that your child needs an echocardiogram (ultrasound picture of the heart) to check for problems. If you have concerns, talk to your child’s doctor.
Why choose Seattle Children’s for craniofacial microsomia treatment?
CFM is among the most common conditions that we treat at Seattle Children’s Craniofacial Center. In the past 5 years, we have cared for more than 250 children with features of CFM. We have experts in every field your child might need.
Many of our patients are newly diagnosed babies. We also work with children who received their initial care at another hospital. We treat children, teens and young adults up to age 21 and sometimes beyond.
- Team-based care from experts: We’ll bring together all the team members your child needs, such as an , craniofacial , craniofacial , , , nurse, , , , , , and .
- Expert surgery at the right time: As your child grows, we do surgeries they may need, such as to enlarge and align their jaws, reshape or rebuild their ears, improve hearing or mend a cleft lip or palate. Our team is experienced in the range of procedures your child may need.
- Support for your whole family: A diagnosis of craniofacial microsomia can be scary. We take time to explain your child’s condition. We help you understand your child’s treatment options and make the choices that are right for your family.
- Research to improve care: Our research is helping us to:
- Learn about long-term outcomes for children with malformations of the jaws and ears
- Design standard ways to define and treat craniofacial microsomia
- Understand the changes in genes that cause microtia (undersized outer ear)
Related Links
- Craniofacial Microsomia (PDF)
- Craniofacial Microsomia: Longitudinal Outcomes in Children Pre-Kindergarten (CLOCK)
Contact Us
Contact the Craniofacial Center at 206-987-2208 for an appointment, a second opinion or more information.
If you live outside of Washington, Alaska, Montana and Idaho, please contact our coordinator for out-of-area patients at 206-987-0814.
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