Table of contents Physiology of testicular function.- Physiology of sperm maturation and fertilisation. Nosology of andrological disorders.- Anamnesis and physical examination. Imaging techniques.- Endocrinological diagnosis.- Cytogenetic and molecular genetic investigations.- Semen analysis.- Sperm function tests.- Testicular biopsy and histology.- Diseases of the hypothalamus and the pituitary gland.- Disorders at the testicular level.- Late-onset hypogonadism.- Diseases of the seminal ducts and the accessory organs.- Disorders of sperm deposition and erectile dysfunction.- Disorders of androgen target organs.- Testicular dysfunction in systemic diseases.- Environmental and occupational influences on male reproductive health.- Gynecology relevant to andrology.- Testosterone therapy.- Empirical therapies for idiopathic male infertility Assisted reproduction.- Cryopreservation of human semen.- Vasectomy.- Approaches to hormonal male contraception.- Approaches to non-hormonal male contraception.- Ethical aspects of reproductive medicine.