Journal
CLINICAL GENETICS
Volume 58, Issue 1, Pages 64-68Publisher
MUNKSGAARD INT PUBL LTD
DOI: 10.1034/j.1399-0004.2000.580111.x
Keywords
chromosome 22q11 deletion; cortical dysgenesis; Di George syndrome; Shprintzen syndrome; velo-cardio-facial syndrome
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Two patients with chromosome 22q11 deletion and cortical dysgenesis (gyral abnormalities) are reported in this study. One had unilateral clubfoot in addition to multiple features suggestive of the Di George syndrome (DGS), and the other presented with leg asymmetry and seizures, with subsequent recognition of the velo-cardio-facial syndrome (VCFS). In each patient, gyral abnormalities were identified in the hemisphere contralateral to the limb abnormality. A wide range of central nervous system abnormalities have been reported in DGS and VCFS, including three prior reports of gyral abnormalities (lissencephaly, microgyria). The 2 patients reported herein strengthen the association between the 22q11 deletion spectrum and cortical dysgenesis, but the underlying pathogenetic mechanism (primary neural migration vs, vascular disruption) remains unclear.
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