Ultrasound Video showing Pyonephrosis associated with pyoureter.

Описание: This video shows Pyonephrosis associated with pyoureter.
Renal ultrasound demonstrated moderate unilateral hydronephrosis with echogenic debris in the right renal pelvis, suggestive of pyonephrosis.
Pyelonephritis. Purulent exudate (inflammatory cells, infectious organisms, and necrotic, sloughed (sluhft ) urothelium) collects in the hydronephrotic collecting system ("pus under pressure") and forms an abscess.
Pyonephrosis is defined as infected hydronephrosis complicated by infectious destruction of the renal parenchyma or the presence of pus in the dilated pyelocaliceal ( Pus in the pelvicalyceal system ).
Pyonephrosis—pus in the renal pelvis—results from urinary tract obstruction in the presence of pyelonephritis. Similar to an abscess, Pyonephrosis is typically associated with fever, chills, and flank pain, although some patients may be asymptomatic.
Pyelonephritis is inflammation of the kidney, typically due to a bacterial infection. Symptoms most often include fever and flank tenderness. Other symptoms may include nausea, burning with urination, and frequent urination. Complications may include pus around the kidney, sepsis, or kidney failure.
Radiographic features----Ultrasound
Ultrasound usually shows dilatation of the pelvicalyceal system with the following additional features:
Echogenic debris in the collecting system: considered the most reliable sign
Fluid-fluid levels within the collecting system
Incomplete ("dirty") shadows of gas in the collecting system may occasionally be seen

What is the difference between UTI and pyelonephritis?
Urinary tract infection (UTI) refers to any infection of the urinary tract (i.e. anywhere from the kidneys to the bladder). A kidney infection is called pyelonephritis and is usually more severe than a bladder infection alone, which is called cystitis. Pyelonephritis usually affects one kidney only.