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Am J Med Genet. 1996 Feb 2;61(4):310-9.

Multiple vertebral segmentation defects: analysis of 26 new patients and review of the literature.

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  • 1Medical Genetics Birth Defects Center, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.


To further delineate and classify those forms of short trunk dwarfism characterized by multiple vertebral segmentation defects, we analyzed 26 new patients and reviewed 115 described in the literature. Three distinct entities were recognized based on radiographic and clinical findings. Jarcho-Levin syndrome is the lethal autosomal recessive form, characterized by a symmetric crab-like chest. Spondylocostal dysostosis is the benign autosomal dominant condition. Spondylothoracic dysostosis shows considerable clinical and radiographic overlap with spondylocostal dysostosis. Malformations observed in association with multiple vertebral segmentation defects are more common in the sporadic patients. Analysis of the 26 new individuals revealed that the body segment in which these nonvertebral malformations occur corresponds to the site of the vertebral segmentation defects.

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