Abstract
We present a previously undescribed occult malformation of the upper lip manifest by discontinuity of the orbicularis oris muscle. The relationship of this defect to our current concept of abnormal maxillary process development is discussed along with a proposal to extend the cleft lip phenotype.
Publication types
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Case Reports
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Cleft Lip / embryology
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Cleft Lip / pathology*
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Epithelium / abnormalities
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Epithelium / embryology
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Gestational Age
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Humans
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Lip / abnormalities
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Lip / embryology
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Mesoderm / pathology
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Muscles / abnormalities
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Muscles / embryology
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Phenotype