Klinefelter Syndrome

  • (noun): Syndrome in males that is characterized by small testes and long legs and enlarged breasts and reduced sperm production and mental retardation; a genetic defect in which an extra X chromosome (XXY) is present in the male.
    Synonyms: Klinefelter's syndrome, XXY-syndrome

Some articles on klinefelter syndrome, syndrome, klinefelter:

Klinefelter's Syndrome - Diagnosis - Differential Diagnosis
... The symptoms of Klinefelter syndrome are often variable therefore, a karyotype analysis should be ordered when small testes, infertility, gynecomastia, long legs/arms ... The differential diagnosis for the Klinefelter syndrome can include the following conditions fragile X syndrome, Kallmann syndrome and Marfan syndrome ... There have been some reports of individuals with Klinefelter syndrome who also have other chromosome abnormalities, such as Down syndrome ...
Klinefelter's Syndrome
... Klinefelter syndrome or Klinefelter's syndrome, also 47,XXY or XXY syndrome, is a genetic disorder in which there is at least one extra X chromosome to a standard human male karyotype, for a ... While females have an XX chromosomal makeup, and males an XY, individuals with Klinefelter syndrome have at least two X chromosomes and at least one Y ... If the physical traits associated with the syndrome become apparent, they normally appear after the onset of puberty ...
X Chromosome - Role in Diseases - Numerical Abnormalities
... Klinefelter syndrome Klinefelter syndrome is caused by the presence of one or more extra copies of the X chromosome in a male's cells ... Males with Klinefelter syndrome typically have one extra copy of the X chromosome in each cell, for a total of two X chromosomes and one Y chromosome (47,XXY) ... which means that the average IQ in Klinefelter syndrome is in general in the normal range, although below average ...
XXYY Syndrome - History
... in a 15-year-old mentally challenged boy who showed signs of Klinefelter syndrome, however chromosome testing revealed 48, XXYY instead of the 47, XXY ... Because of this, 48, XXYY syndrome was originally considered a variation of Klinefelter syndrome ... XXYY is still considered a variation of Klinefelter syndrome by some definitions, mainly because the pathophysiology of the testicular dysfunction has not been shown to ...

Famous quotes containing the word syndrome:

    [T]he syndrome known as life is too diffuse to admit of palliation. For every symptom that is eased, another is made worse. The horse leech’s daughter is a closed system. Her quantum of wantum cannot vary.
    Samuel Beckett (1906–1989)