620 



THE URINARY ORGANS. 



The gross appearance of the kidneys varies with the degree and ex- 

 tent of the degeneration. The kidney may be slightly or considerably 

 enlarged. On section the cortex is usually thickened and pale with ob- 



FIG. 380. ALBUMINOUS DEGENERATION OF THE KIDNEY (Acute Parenchymatous Degeneration). 



From a case of yellow lever, a. The swollen and granular epithelium peeling off and disintegrating ; ft, 

 hyaline material in the lumen of the tubule. 



literation of the normal cortical markings. The capsule of the kidney 

 is not abnormally adherent. When there are other associated or an- 

 tecedent lesions in the kidney, the gross appearance of the organ varies. 

 Fatty Degeneration. This may occur in those diseases of the blood or 

 circulatory system in which general nutrition suffers ; in infectious dis- 

 eases often associated with or following albuminous degeneration; in 



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FIG. 381. FATTY DEGENERATION OF THE EPITHELIUM IN THE CONVOLUTED TUBULES OF THE KIDNEY. 

 The fat droplets are stained black by osmic acid. 





