How is emphysematous pyelitis differentiated by its more serious counterpart, emphysematous pyelonephritis?
In emphysematous pyelitis, foci of air are isolated to the excretory system (pelvicalyceal system). However, in emphysematous pyelonephritis air can be seen throughout the renal parenchyma and may extend into the perinephric space.
Enlarged right kidney measuring 16.9 x 8.0 x 8.9 cm. There is pelviectasis and caliectasis without cortical thinning. The renal collecting system is filled with hypoechoic fluid and debris. There is mild dirty shadowing overlying the right kidney.
Enlarged left kidney measuring 15.1 x 8.4 x 8.9 cm. There is pelviectasis and caliectasis without cortical thinning. The echogenicity of the kidney is slightly increased from normal. There is dirty shadowing overlying the kidney.