CYSTIC DISEASE OF THE URINARY TRACT IN MAN 73 



sented a highly refracting reticular or a granular structure. In 

 many of the cysts the colloid-like material and the oval bodies were 

 breaking up into small amoeboid bodies, 1 which consisted of dense 

 points, which stained both with nuclear and acid dyes, and were 

 set in a highly refracting substance which did not stain (see below, 

 Fig. 25, where these bodies are shown, and with them other bodies 

 with small nuclei and stained densely with hsematoxylin, and which 

 may be mononuclear leucocytes). 



The cystic portion of the kidney, when examined in sections under 

 the microscope, shows that the cystic condition results from a dilata- 



-b 



FIG. 25. CYSTIC DISEASE OF THE URINARY TRACT. 



Part of a cover-glass preparation of the contents of a cyst stained with acid hasma- 

 toxylin : #, Amcebae, partly dense and partly reticular, no chromatin present ; 

 <, similar body, but with dense chromatic nucleus. (Camera drawing made 

 under a yW-inch oil-immersion lens, x 800 diameters.) 



tion of the tubules in the cortex at the bases of the pyramids, and, 

 a most important point, the contents of the cysts in every essential 

 particular, both structural and as to staining reactions, resemble the 

 contents of the cysts of the ureter. 2 



1 In appearance and staining reaction these bodies, save that they are not 

 encapsuled, resemble in many ways the so-called 'cancer-bodies.' 



" Details of these renal cysts are figured in my article in the Transactions of 

 the Pathological Society, 1892, p. 96, where other details on other points are to be 

 found. I should here explain that in Plate IV. accompanying that article the 

 texture of the oval bodies and that of the albuminous material in the cysts has been 

 given a different aspect. This was not the case ; the denser part of the oval bodies 

 exactly resembled the albuminous material which surrounded them. 



