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Moderate mental retardation and nonspecific dysmorphic syndrome associated with ring chromosome 9

✍ Scribed by J. P. Fryns; A. Lambrechts; H. Jansseune; H. Berghe

Publisher: Springer
Year: 1979
Tongue: English
Weight: 224 KB
Volume: 50
Category: Article
ISSN: 0340-6717
DOI: 10.1007/bf00295585

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✦ Synopsis

A ring chromosome 9 is reported in a 12-year-old, moderately mentally retarded boy. As in other ring chromosome 9 patients, the clinical stigmata are nonspecific and their expressivity is mild. The finding of two normal cells of a total of 121 cells examined favors the hypothesis of a postzygotic, mitotic origin of the ring chromosome formation.

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