UTI can result in acute renal failure and chronic kidney disease, therefore any renal scarring or damage to the renal parenchyma
can be assessed using imaging techniques.
A, Nephrectomy specimen from a patient on long-term dialysis, demonstrating acquired cysts and atrophic renal parenchyma
with obscured corticomedullary junction.
The sign of a false lumen without contrast filling at the level of the right renal artery orifice (arrow) and delay in the nephrogram phase in the right renal parenchyma
, (b) There is no contrast enhancement in the right kidney even if the left kidney is in nephrogram phase
Multiple factors are implicated in renal inflammation, including cytokines and growth factors, and aggravated inflammation eventually becomes interstitial fibrosis, leading to the complete destruction of renal parenchyma
and disruption of renal function (Liu 2006).
Duplex system is explained as the kidney with two pyelocaliceal systems, which may have either single or bifid ureter (partial duplication) or double ureterdraining separately into the urinary bladder (complete duplication), with a single renal parenchyma
that is drained by two pyelocaliceal systems4.
The pathogenesis involves a perpetual pressure atrophy of the renal parenchyma
due to increased hydrostatic pressure from the obstructed ureter or urethra, to the renal pelvis, renal tubular system and Bowman's space; the ultimate result of which, is a progressive filtration failure manifested clinically as a decline in GFR due to compensation failure in the affected kidney.
Care was taken not to include the renal parenchyma
at the suture bite, in order to avoid parenchymal retraction and consequent stenosis.
Accordingly, single or multiple, cortical or diffuse areas of decreased activity in at least two different angles in the renal parenchyma
was accepted as indication of acute infection (Figure 1).
Emphysematous pyelonephritis (EPN) is a radiologically diagnosed life-threatening, necrotizing infection of the kidneys characterized by the presence of gas in the renal parenchyma
and its surrounding tissue.
This neoplasm caused marked compression atrophy with congestion and effacement of the renal parenchyma
, which often contained dilated tubules with urate or cellular (often heterophilic) casts, urate tophi, and mineral deposits.
99mTc-DMSA scan revealed an inhomogeneous distribution of radiotracer in renal parenchyma
, which was lower in the upper-medial part of the right kidney.
Argon beam coagulation achieved hemostasis prior to reapproximation of the renal parenchyma
with Surgicel (Ethicon Inc, Somerville, NJ) bolsters.