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Klinefelter syndrome

Klinefelter syndrome

6.2
A genetic condition in males with an extra X chromosome causing small testes, low sperm, and learning problems
  • noun
  • /ˈklaɪnˌfɛltər ˈsɪnˌdroʊm/
  • Specialized
translation icon : síndrome de Klinefelter
  • Babies born with Klinefelter syndrome (47, XXY) have normal male genitalia.
  • men with Klinefelter syndrome

Examples

  • Most men with Klinefelter syndrome are infertile, but an unknown proportion are fertile (Warburg, 1963).

    Academic text (2002)
  • Males with Klinefelter syndrome often experience delayed puberty due to their condition.

  • Klinefelter syndrome.

    Academic text (2002)
  • Because Klinefelter syndrome is most often discovered in the course of infertility evaluation, fertile men with Klinefelter syndrome are likely to go completely undetected.

    Academic text (2002)
  • Because Klinefelter syndrome is most often discovered in the course of infertility evaluation, fertile men with Klinefelter syndrome are likely to go completely undetected.

    Academic text (2002)
  • Specifically, Fausto-Sterling includes Klinefelter syndrome, Turner syndrome, and all other non-XX, non-XY chromosomal variations in the intersex category.

    Academic text (2002)
  • Abramsky and Chapple (1997) have suggested that many men with Klinefelter syndrome are never diagnosed because they are phenotypically indistinguishable from normal (46, XY) men.

    Academic text (2002)
  • Many reviewers are not aware that this figure includes conditions that most clinicians do not recognize as intersex, such as Klinefelter syndrome, Turner syndrome, and late-onset adrenal hyperplasia.

    Academic text (2002)
  • Doctors may recommend hormone therapy for men diagnosed with Klinefelter syndrome to help with physical development.

  • In some cases, individuals with Klinefelter syndrome may face challenges in learning, impacting their educational experience.

Synonyms

chromosomal abnormality
vsKlinefelter syndrome
  • Specialized
1 6.1

A change in the number or shape of chromosomes that often causes health problems

is a specific example caused by one extra X rather than any chromosome change
chromosomal anomaly
vsKlinefelter syndrome
  • Specialized
1 6.7

A change in the number or shape of chromosomes that often causes health problems

is one particular anomaly defined by an extra X and male features
XXY
vsKlinefelter syndrome
  • Specialized
1 9.9

A male with two X chromosomes and one Y chromosome

labels the clinical syndrome by its genetic constitution rather than symptoms
Klinefelter's syndrome
vsKlinefelter syndrome
  • Specialized
7.4

A condition in males when they have an extra X chromosome that makes the testicles small and reduces sperm

is the same condition but often written without the possessive punctuation
XXY-syndrome
vsKlinefelter syndrome
  • Specialized
8.7

A male condition caused by an extra X chromosome that often causes small testes and reduced fertility

refers to the same clinical picture but uses the other common name

Surface Forms

Morphology

Klinefelter + syndrome

The headword 'syndrome' clearly signals a medical condition or set of symptoms, so a learner who knows that word can infer this is a disorder. However, 'Klinefelter' is an eponymous proper name with no lexical meaning that would indicate the genetic cause or specific features, so the full, specific meaning is not derivable from the parts. This yields partial but not complete transparency.

Etymology

Klinefelter syndrome was named after Dr. Klinefelter, who first noticed men with an 'extra X chromosome'. The word syndrome means a 'set of symptoms', so the name today points to that specific condition and its common signs.