- 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
Obstructions
- Chapter:
- Obstructions
- Author(s):
Franco Dondero
and Francesco Lombardo
- DOI:
- 10.1093/med/9780199235292.003.9098
Azoospermia, the absence of sperm, is the most challenging of clinical conditions despite recent progress in diagnosis and treatment. The prevalence of azoospermia is less than 1% among all men, and approximately 10–15% among infertile men. Its incidence in the general male population is 2–3% (1). Testicular (secretory) azoospermia is untreatable in most cases, and even when a cure can be attempted, success is usually low. Obstructive azoospermia, in contrast, is characterized by normal spermatogenesis and is therefore potentially treatable. Accordingly, this condition has always been the focus of physicians’ interest and attention.
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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