Pathology of kidney and the urinary tract
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Pathology of Kidney and the Urinary tract. Dr. Amar C. Al- Rikabi Dr. Hala Kasouf Kfouri. Pathology of pyelonephritis, Nephrolithiasis and Cystitis. Lecture -2:. Acute on chronic pyelonephritis with numerous septic foci present in an already scarred kidney.

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Pathology of kidney and the urinary tract

Pathology of Kidney and the Urinary tract

Dr. Amar C. Al-Rikabi

Dr. HalaKasoufKfouri



Acute on chronic pyelonephritis with numerous septic foci present in an already scarred kidney
Acute on chronic pyelonephritis with numerous septic foci present in an already scarred kidney.


Acute pyelonephritis there is a diffuse interstitial infiltrate with polymorphonuclear leukocytes
Acute pyelonephritis. There is a diffuse interstitial infiltrate with polymorphonuclear leukocytes.


Acute pyelonephritis. infiltrate with polymorphonuclear leukocytes.The infiltrate of polymorphonuclear leukocytes is not only present within interstitium and in the lumen but also evidence of tubulitis is seen.



Staghorn calculus in pelviureteric junction
Staghorn tubercle bacilli. calculus in pelviureteric junction.


A. Bilateral hydronephrosis with acute on chronic pyelonephritis in a child due to urinary tract obstruction.

B. Hydronephrosis with thinned renal parenchyma in an adult kidney.


A board unshaped scar of healed pyelonephritis

B. Healed pyelonephritis associated with vesicoureteral reflux has produced scarring of both poles of the kidney with calyceal distortion due to infection of the peripheral compound papillae.

A. Board unshaped scar of healed pyelonephritis


Chronic pyelonephritis is a nonspecific interstitial infiltrate predominately with lymphocytes
Chronic pyelonephritis is a nonspecific interstitial infiltrate predominately with lymphocytes.


Chronic pyelonephritis
Chronic pyelonephritis. infiltrate predominately with lymphocytes.


AIN. The mononuclear infiltrate is accompanying by abundant eosinophils and may have a granulomatous appearance.


AIN. Higher power of tubulitis demonstrating interstitial edema and invasion of the tubular epithelium by lymphocytes.


Acute inflammation of the urinary bladder
Acute inflammation of the urinary bladder. edema and invasion of the tubular epithelium by lymphocytes.


Multiple acquired diverticula (arrows) lie between hypertrophied muscular bundles in a hypertrophied bladder of the patient who had severe prostatic hyperplasia.


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