Development of urinary system / functions of urinary tract system / investigations of child with urinary tract system problems / homeostasis / congenital kidney diseases / urinary tract disorders / cystic kidney diseases / tubular diseases / glomerular diseases / kidneys and systemic diseases / urinary tract infections / hypertension / acute renal failure / chronic renal failure / renal replacement therapies: peritoneal dailysis, hemodialysis, continuous renal replacement therapies, kidney transplantation / basics of pediatric urology