- Part 1 Principles of international endocrine practice
- Part 2 Pituitary and hypothalamic diseases
- Part 3 The thyroid
- Part 4 Parathyroid, calcium, and bone metabolism
- Part 5 The adrenal gland and endocrine hypertension
- Part 6 Neuroendocrine tumours and genetic disorders
- Part 7 Growth and development during childhood
- Part 8 Female endocrinology and pregnancy
- Part 9 Male hypogonadism and infertility
- 9.1 Definitions and classification of disorders
- 9.2 Normal male endocrinology
- 9.3 Evaluation of the male patient with suspected hypogonadism and/or infertility
- 9.4 Male endocrinological disorders and male factor infertility
- 9.4.1 Congenital anorchia, acquired anorchia, testicular maldescent, and varicocele
- 9.4.2 Disturbed spermatogenesis
- 9.4.3 Klinefelter’s syndrome
- 9.4.4 XX male
- 9.4.5 XYY male
- 9.4.6 Structural chromosome abnormalities
- 9.4.7 Sequelae of extratesticular disease
- 9.4.8 Testicular tumours
- 9.4.9 Infections/inflammation of the genital tract
- 9.4.10 Obstructions
- 9.4.11 Immunological infertility
- 9.4.12 Idiopathic infertility
- 9.4.13 Treatment of hypogonadism and infertility
- 9.4.14 Insemination, in vitro fertilization, and intracytoplasmic sperm injection
- 9.4.15 Cryopreservation of sperm
- 9.4.16 Sexuality and erectile dysfunction
- 9.4.17 Gynaecomastia
- 9.4.18 Transsexualism
- 9.5 Exogenous factors and male reproductive health
- Part 10 Endocrinology of ageing and systemic disease
- Part 11 Endocrinology of cancer
- Part 12 Obesity, lipids, and metabolic disorders
- Part 13 Diabetes mellitus
XYY male
- Chapter:
- XYY male
- Author(s):
Dieter Meschede
and Eberhard Nieschlag
- DOI:
- 10.1093/med/9780199235292.003.9082
Men with a 47,XYY karyotype do not present with a well-defined clinical syndrome. The diagnosis relies entirely on the cytogenetic demonstration of two Y chromosomes, accompanying an otherwise normal set of chromosomes. Cases with 47,XYY/46,XY mosaicism are also subsumed under the XYY male category. The 48,XXYY karyotype is briefly discussed in Chapter 9.4.3.
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- Part 1 Principles of international endocrine practice
- Part 2 Pituitary and hypothalamic diseases
- Part 3 The thyroid
- Part 4 Parathyroid, calcium, and bone metabolism
- Part 5 The adrenal gland and endocrine hypertension
- Part 6 Neuroendocrine tumours and genetic disorders
- Part 7 Growth and development during childhood
- Part 8 Female endocrinology and pregnancy
- Part 9 Male hypogonadism and infertility
- 9.1 Definitions and classification of disorders
- 9.2 Normal male endocrinology
- 9.3 Evaluation of the male patient with suspected hypogonadism and/or infertility
- 9.4 Male endocrinological disorders and male factor infertility
- 9.4.1 Congenital anorchia, acquired anorchia, testicular maldescent, and varicocele
- 9.4.2 Disturbed spermatogenesis
- 9.4.3 Klinefelter’s syndrome
- 9.4.4 XX male
- 9.4.5 XYY male
- 9.4.6 Structural chromosome abnormalities
- 9.4.7 Sequelae of extratesticular disease
- 9.4.8 Testicular tumours
- 9.4.9 Infections/inflammation of the genital tract
- 9.4.10 Obstructions
- 9.4.11 Immunological infertility
- 9.4.12 Idiopathic infertility
- 9.4.13 Treatment of hypogonadism and infertility
- 9.4.14 Insemination, in vitro fertilization, and intracytoplasmic sperm injection
- 9.4.15 Cryopreservation of sperm
- 9.4.16 Sexuality and erectile dysfunction
- 9.4.17 Gynaecomastia
- 9.4.18 Transsexualism
- 9.5 Exogenous factors and male reproductive health
- Part 10 Endocrinology of ageing and systemic disease
- Part 11 Endocrinology of cancer
- Part 12 Obesity, lipids, and metabolic disorders
- Part 13 Diabetes mellitus