trisomy Chromosome 22
A chromosomal abnormality characterized by a third copy of chromosome 22. Most cases of complete trisomy 22 are lethal in utero, resulting in miscarriage. Cases in which there is a mosaic duplication (Mosaic Trisomy 22) may cause cardiac defects, growth, and developmental delays in affected children.
Also Known As:
Chromosome 22, trisomy; Duplication 22; Trisomy 22
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