trisomy 21 syndrome — Down syndrome Down syn drome, Down s syndrome Down s syn drome, n. (Med.) A congenital disorder caused by an extra chromosome 21 in some or all cells. It causes a variable number and degree of abnormalities, including retarded growth, mental… … The Collaborative International Dictionary of English
trisomy C syndrome — trisomy 8 s … Medical dictionary
trisomy D syndrome — trisomy 13 s … Medical dictionary
trisomy E syndrome — trisomy 18 s … Medical dictionary
Trisomy 21 syndrome — A common chromosome disorder, often called Down syndrome, due to an extra chromosome number 21 (trisomy 21). The chromosome abnormality affects both the physical and intellectual development of the individual. Trisome 21 (Down) syndrome is… … Medical dictionary
Trisomy 13 syndrome — Condition with three rather than the normal two chromosomes #13. Children born with this syndrome have multiple malformations and mental retardation due to the extra chromosome #13. The congenital malformations (birth defects) commonly include… … Medical dictionary
trisomy 8 syndrome — a syndrome associated with an extra chromosome 8, usually mosaic (trisomy 8/normal), characterized by mild to severe mental retardation, prominent forehead, deep set eyes, thick lips, prominent ears, and camptodactyly … Medical dictionary
trisomy 11q syndrome — a rare syndrome resulting from the presence of an extra long arm of chromosome 11; because different segments may be involved, the associated anomalies are highly variable and include preauricular fistulas, hypoplasia of the gallbladder,… … Medical dictionary
trisomy 22 syndrome — a rare syndrome due to an extra chromosome 22, characterized typically by mental and growth retardation, microcephaly, low set or malformed ears, micrognathia, long philtrum, preauricular skin tag or sinus, and congenital heart disease. In males … Medical dictionary
Patau syndrome (trisomy 13 syndrome) — A syndrome characterized by multiple malformations, commonly including scalp defects, hemangiomas (blood vessel malformations) of the face and nape of the neck, cleft lip and palate, malformations of the heart and abdominal organs, and flexed… … Medical dictionary
