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Ear abnormalities
Ear abnormalities


Pinna of the newborn ear
Pinna of the newborn ear


Definition:

Pinna abnormalities and low-set ears refer to abnormalities in the shape or position of the outer ear (pinna or auricle).



Alternative Names:

Low-set ears



Considerations:

During fetal development , the outer ear or "pinna" forms at a time when many other critical organs are developing (such as the kidneys). Abnormalities in the shape or positioning of the pinna may be an indication that there are other associated abnormalities present.

Common abnormalities include abnormal folds in the pinna, prominence of the ears, low-set positioning, abnormal rotation of the pinna, and even absence of the pinna.

Many children are born with ears that stick out (protruding ears). Although people may comment on the ear shape, this condition is a variation of normal and is not associated with other disorders. However, low-set ears, absent pinna, and abnormal folds may be associated with various medical conditions.



Common Causes:

The following common conditions are associated with low-set and malformed ears:

Rare conditions associated with low-set and malformed ears include:



Home Care:



Call your health care provider if:

Call if you notice abnormally shaped or positioned ears.

In most cases, pinna abnormalities are found by a health care provider during the first well baby exam. This exam is usually performed at the hospital, if that is where the baby is delivered.



What to expect at your health care provider's office:

The doctor will ask medical history questions such as:

  • Does the child have any other physical abnormalities?
  • Do you have a family history of having abnormal-shaped ears?

To determine if the pinna is abnormal, the doctor will conduct a series of measurements with a tape measure. Other parts of the body will be also measured, including the eyes, hands, and feet.

All newborns should have a hearing test. A child with pinna abnormalities should also have a hearing test. Examination for any mental development changes may be performed as the child grows. Genetic testing may also be done.

No treatment is needed for pinna abnormalities, as they do not affect the hearing. However, sometimes cosmetic surgery is recommended.




Review Date: 11/14/2007
Reviewed By: Deirdre O’Reilly, M.D., M.P.H., Neonatologist, Division of Newborn Medicine, Children’s Hospital Boston and Instructor in Pediatrics, Harvard Medical School, Boston, Massachusetts.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100