loading...| Preferred Name | Brachycephaly | |
| Synonyms |
Broad cranium shape Broad skull shape Wide head shape Wide cranium shape Wide skull shape Broad head shape Short and broad skull |
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| Definitions |
An abnormality of skull shape characterized by a decreased anterior-posterior diameter. That is, a cephalic index greater than 81%. Alternatively, an apparently shortened anteroposterior dimension (length) of the head compared to width. Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms also have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Brachycephaly is distinct from Flat occiput, but both can be present in the same individual and should be coded separately. |
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| ID |
http://purl.obolibrary.org/obo/HP_0000248 |
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| comment |
Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms also have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Brachycephaly is distinct from Flat occiput, but both can be present in the same individual and should be coded separately. |
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| database_cross_reference |
UMLS:C4072824 UMLS:C4072823 SNOMEDCT_US:13649004 UMLS:C0221356 |
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| definition |
An abnormality of skull shape characterized by a decreased anterior-posterior diameter. That is, a cephalic index greater than 81%. Alternatively, an apparently shortened anteroposterior dimension (length) of the head compared to width. |
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| has_alternative_id |
HP:0002258 HP:0004479 HP:0008512 |
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| has_broad_synonym |
Broad cranium shape Broad skull shape Wide head shape Wide cranium shape Wide skull shape Broad head shape |
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| has_exact_synonym |
Short and broad skull |
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| id |
HP:0000248 |
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| in_subset | ||
| label |
Brachycephaly |
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| notation |
HP:0000248 |
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| preferred label |
Brachycephaly |
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| prefLabel |
Brachycephaly |
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| subClassOf |