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Craniovertebral malformations in hemifacial microsomia
Abstract:
There is increasing evidence that hemifacial microsomia (HFM), Goldenhar syndrome (GS), and oculoauriculovertebral dysplasia (OAV) are part of a spectrum within a single entity. In support of this thesis are the family studies that have suggested that isolated microtia (M) may represent the mildest form of the condition [Kaye et al, 1979; Rollnick and Kaye, 1983]. Vertebral malformations are pathognomonic of OAV, but they have also been described in HFM and GS. In this investigation we studied the frequency and type of cervical spine malformations in HFM, GS, OAV, and M. Our findings show that the frequency of cervical spine malformations in HFM and M was greater than values for a normal population. This further supports the probable association between HFM, GS, OAV, and M. Fusions were the most prevalent cervical spine malformation encountered. The study also included analysis of the cranial base and craniovertebral junction.
Insights
Hemifacial microsomia (HFM), Goldenhar syndrome (GS), and oculoauriculovertebral dysplasia (OAV) may be part of a spectrum, with microtia (M) as a mild form. Cervical spine malformations, particularly fusions, are more common in these conditions, supporting their association.
Area of Science:
- Medical Genetics
- Developmental Biology
- Orthopedics
Background:
- Hemifacial microsomia (HFM), Goldenhar syndrome (GS), and oculoauriculovertebral dysplasia (OAV) are increasingly recognized as potentially related conditions.
- Family studies suggest isolated microtia (M) might represent the mildest manifestation of this spectrum.
- Vertebral malformations are characteristic of OAV and have been observed in HFM and GS.
Purpose of the Study:
- To investigate the frequency and types of cervical spine malformations in HFM, GS, OAV, and M.
- To provide further evidence for the association between these conditions.
- To analyze cranial base and craniovertebral junction characteristics.
Main Methods:
- Retrospective analysis of patient data including HFM, GS, OAV, and M.
- Evaluation of cervical spine malformations, focusing on frequency and type.
- Assessment of cranial base and craniovertebral junction features.
Main Results:
- The frequency of cervical spine malformations was significantly higher in HFM and M compared to the normal population.
- Vertebral fusions were the most common type of cervical spine malformation observed.
- Findings support a probable association between HFM, GS, OAV, and M.
Conclusions:
- Cervical spine malformations are a common feature in the spectrum of HFM, GS, OAV, and M.
- The increased prevalence of these malformations supports the hypothesis that these conditions are related.
- Further research into the cranial base and craniovertebral junction may elucidate shared pathogenetic mechanisms.