BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuLow-set ears and pinna abnormalitiesLow-set ears; Microtia; "Lop" ear; Pinna abnormalities; Genetic defect - pinna; Congenital defect - pinnaLow-set ears and pinna abnormalities refer to an abnormal shape or position of the outer ear (pinna or auricle). Considerations The outer ear or "pinna" forms when the baby is growing in the mother's womb. The growth of this ear part takes place at a time when many other organs are developing (such as the kidneys). Abnormal changes in the shape or position of the pinna may be a sign that the baby also has other related problems.Common abnormal findings include cysts in the pinna or skin tags.Skin tagsA cutaneous skin tag is a common skin growth. Most of the time, it is harmless.ImageRead Article Now Book Mark Article Many children are born with ears that stick out. Although people may comment on the ear shape, this condition is a variation of normal and is not linked with other disorders.However, the following problems may be related to medical conditions:Abnormal folds or location of the pinna Low-set ears No opening to the ear canal No pinna No pinna and ear canal (anotia) Causes Common conditions that can cause low-set and unusually formed ears include:Down syndrome Turner syndromeTurner syndromeTurner syndrome is a rare genetic condition in which a female does not have the usual pair of X chromosomes.ImageRead Article Now Book Mark Article Rare conditions that can cause low-set and malformed ears include:Beckwith-Wiedemann syndrome Beckwith-Wiedemann syndromeBeckwith-Wiedemann syndrome is a growth disorder that causes large body size, large organs, and other symptoms. It is a congenital condition, which ...ImageRead Article Now Book Mark Article Potter syndrome Potter syndromePotter syndrome and Potter phenotype refers to a group of findings associated with a lack of amniotic fluid and kidney failure in an unborn infant....ImageRead Article Now Book Mark Article Rubinstein-Taybi syndrome Rubinstein-Taybi syndromeRubinstein-Taybi syndrome (RTS) is a genetic disease. It involves broad thumbs and toes, short stature, distinctive facial features, and varying deg...Read Article Now Book Mark Article Smith-Lemli-Opitz syndrome Treacher Collins syndrome Treacher Collins syndromeTreacher Collins syndrome is a genetic condition that leads to problems with the structure of the face. Most cases are not passed down through famil...Read Article Now Book Mark Article Trisomy 13 Trisomy 13Trisomy 13 (also called Patau syndrome) is a genetic disorder in which a person has 3 copies of genetic material from chromosome 13, instead of the u...ImageRead Article Now Book Mark Article Trisomy 18Trisomy 18Trisomy 18 is a genetic disorder in which a person has a third copy of material from chromosome 18, instead of the usual 2 copies. Rarely, the extra...ImageRead Article Now Book Mark Article When to Contact a Medical Professional In most cases, a health care provider finds pinna abnormalities during the first well-baby exam. This exam is most often done at the hospital at the time of delivery. What to Expect at Your Office Visit The provider will:Examine and test the child for other physical abnormalities of the kidneys, bones of the face, skull, and facial nerve Ask if you have a family history of abnormal-shaped ears To determine whether the pinna is abnormal, the provider will take measurements with a tape measure. Other parts of the body will also be measured, including the eyes, hands, and feet.All newborns should have a hearing test. Exams for any changes in mental development may be performed as the child grows. Genetic testing may also be done.TREATMENTMost of the time, no treatment is needed for pinna abnormalities because they do not affect hearing. However, sometimes cosmetic surgery is recommended.Skin tags may be tied off, unless there is cartilage in them. In that case, surgery is needed to remove them. Ears that stick out may be treated for cosmetic reasons. During the newborn period, a small framework may be attached using tape or Steri-Strips. The child wears this framework for several months. Surgery to correct the ears cannot be done until the child is 5 years old. More severe abnormalities may require surgery for cosmetic reasons as well as for function. Surgery to create and attach a new ear is often done in stages. Open ReferencesReferencesHaddad J, Dodhia SN. Congenital malformations of the ear. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 656.Madan-Khetarpal S, Arnold G, Ortiz D. Genetic disorders and dysmorphic conditions. In: Zitelli BJ, McIntire SC, Nowalk AJ, Garrison J, eds. Zitelli and Davis' Atlas of Pediatric Physical Diagnosis. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 1.Mitchell AL. Congenital anomalies. In: Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martin's Neonatal-Perinatal Medicine. 11th ed. Philadelphia, PA: Elsevier; 2020:chap 30.AllVideoImagesTogEar abnormalities - illustration Low set ears (pinna), abnormal rotation, the absence of ears, and abnormal folds in the ear may be associated with various medical conditions.Ear abnormalitiesillustrationPinna of the newborn ear - illustration The pinna or auricle forms (during fetal development) at a time when many other critical organs are forming (such as the kidneys). Abnormalities in the shape or positioning of the pinna may be an indication that there are other associated abnormalities present. Pinna of the newborn earillustrationEar abnormalities - illustration Low set ears (pinna), abnormal rotation, the absence of ears, and abnormal folds in the ear may be associated with various medical conditions.Ear abnormalitiesillustrationPinna of the newborn ear - illustration The pinna or auricle forms (during fetal development) at a time when many other critical organs are forming (such as the kidneys). Abnormalities in the shape or positioning of the pinna may be an indication that there are other associated abnormalities present. Pinna of the newborn earillustrationRelated Information Fetal development(Special Topic) Review Date: 12/10/2021 Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. 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. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. 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