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Schinzel-Giedion syndrome
Schinzel-Giedion syndrome is a highly recognizable syndrome characterized by severe mental retardation, distinctive facial features, and multiple congenital malformations including skeletal abnormalities, genitourinary and renal malformations, and cardiac defects, as well as a higher-than-normal prevalence of tumors, notably neuroepithelial neoplasia (summary by Hoischen et al., 2010). [from OMIM]
Increased density of long bones
An abnormal increase in the bone density of the long bones. [from HPO]
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