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PubMed · 7661545

Polyotia.

Abstract

Polyotia is an extremely rare congenital anomaly of the external ear. Only four case reports are documented in the literature. A 13-month-old child with a mirror-image duplication of the left auricle was operated on in a one-stage corrective procedure. The duplicated portion of the affected ear was positioned anteriorly and measured approximately two-thirds the size of the posterior, normally oriented portion. There were two fully developed conchae and one fully developed and one partially developed anthelix and lobule. The entire complex had a single external auditory meatus and no tragus. There were no other congenital anomalies, and the child was developmentally normal. The technique for surgical correction is described, and a review of the literature is presented.

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BibTeXRIS

R L Bendor-Samuel, T C Tung, Y R Chen. 1995. Polyotia.. https://doi.org/10.1097/00000637-199506000-00015

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Antenatal depiction of the fetal ear with three-dimensional ultrasonography.

OBJECTIVE: To evaluate the feasibility of examining the fetal ear with three-dimensional ultrasound. METHODS: In 125 pregnancies between 19 and 38 weeks of gestation, fetal ears were evaluated by three-dimensional ultrasound. The volume images with surface rendering were analyzed to depict the morphology, lying axis, orientation, and cranial location of the fetal ears. RESULTS: Three-dimensional images of one or both ears were successfully reconstructed in 105 fetuses. Among them, 18 fetuses had anomalous ears. The anomalous ears, including microtia, low-set ear with slope axis, abnormal ear orientation, and edematous ear, were confirmed after delivery. Three-dimensional ultrasound consistently displayed fetal ear abnormalities with greater accuracy and clarity. CONCLUSION: Because anomalous ears may be a part of complex fetal malformations, it is important to recognize ear abnormalities. Due to the complexity of the fetal ear, three-dimensional ultrasound offers more important information than two-dimensional ultrasound, which simply gives auricular geometry. We suggest that three-dimensional ultrasound can be used better to examine the fetal ear and may prove to be useful for prenatal diagnosis and genetic counseling.

Ear, External