Medical Definition of Trisomy 21 syndrome

1. A common chromosome disorder due to an extra chromosome number 21 (trisomy 21). The syndrome causes mental retardation, a characteristic face, and multiple malformations. It is associated with a major risk for heart problems, a lesser risk of duodenal atresia (part of the intestines not developed), and a minor but still significant risk of acute leukaemia. Trisome 21 syndr0ome is also commonly called down syndrome after the 19th century english doctor langdon down who was curiously enough not the first person to describe the condition, added little to knowledge and, in great error, attributed the condition to a reversion to the mongoloid race. The disorder was also once called mongolism, a term now considered slang. (12 Dec 1998)

Lexicographical Neighbors of Trisomy 21 Syndrome

trisodium
trisodium orthophosphate
trisodium phosphate
trisoligonucleotide
trisoligonucleotides
trisome
trisomes
trisomic
trisomics
trisomies
trisomy
trisomy 18 syndrome
trisomy 20 syndrome
trisomy 21 syndrome (current term)
trisomy 8 syndrome
trisomy C syndrome
trispaston
trispectra
trispectrum
trisphosphate
trisphosphates
trisplanchnic
trispyrazolylborate
trispyrazolylborates
trist
tristability

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