Edwards syndrome

Clenched hand and overlapping fingers: index finger overlaps third finger and fifth finger overlaps fourth finger, characteristically seen in trisomy 18

Edwards syndrome (also known as trisomy 18 [T18]) is a chromosomal abnormality caused by the presence of all, or part of, an extra 18th chromosome. This genetic condition almost always results from nondisjunction during meiosis. It is named after John Hilton Edwards, who first described the syndrome in 1960. It is the second-most common autosomal trisomy, after Down syndrome, that carries to term.

单词	E trisomy
释义	E trisomy 英语百科 Edwards syndrome Edwards syndrome (also known as trisomy 18 [T18]) is a chromosomal abnormality caused by the presence of all, or part of, an extra 18th chromosome. This genetic condition almost always results from nondisjunction during meiosis. It is named after John Hilton Edwards, who first described the syndrome in 1960. It is the second-most common autosomal trisomy, after Down syndrome, that carries to term.
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E trisomy

Edwards syndrome