THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Acute pyelonephritis is a bacterial infection causing inflammation of the kidneys and is one of the most common diseases of the kidney. Pyelonephritis occurs as a complication of an ascending urinary tract infection (UTI) which spreads from the bladder to the kidneys and their collecting systems.

Detailed explanation-2: -Acute pyelonephritis is inflammation of the renal parenchyma, calyces and pelvis, which encompasses a spectrum of disease from a mild febrile infection to sepsis.

Detailed explanation-3: -A kidney infection usually happens when bacteria – often a type called E. coli – gets into the urethra (the tube which carries urine out of the body) and travels up through the bladder and into the kidneys.