MICROANATOMY

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 a bacterial infection of the kidney parenchyma that can be organ-and/or life-threatening and that often leads to scarring of the kidney. The bacteria in these cases have usually ascended from the lower urinary tract, but may also reach the kidney via the bloodstream.

Detailed explanation-3: -Pyelonephritis is inflammation of the kidney, typically due to a bacterial infection. Symptoms most often include fever and flank tenderness.