. The elements of pathological histology with special reference to practical methods . ry tubule, x 545. size (Fig. 145, h) appear in the bodies of the epithelial cells liningthe canaliculi and sjlomeruli, and sometimes also in the endothelialcells of the blood-vessels and in the connective-tissue cells, whilst 292 THE KIDNEYS in the latter case the nuclei vanish and the cells either becomecloudy or are reduced to homogeneous masses, and frequently thedegenerated epithelial cells of the tubules also separate from themembrana propria. When urinary tubules which have undergonea high degree of fa
. The elements of pathological histology with special reference to practical methods . ry tubule, x 545. size (Fig. 145, h) appear in the bodies of the epithelial cells liningthe canaliculi and sjlomeruli, and sometimes also in the endothelialcells of the blood-vessels and in the connective-tissue cells, whilst 292 THE KIDNEYS in the latter case the nuclei vanish and the cells either becomecloudy or are reduced to homogeneous masses, and frequently thedegenerated epithelial cells of the tubules also separate from themembrana propria. When urinary tubules which have undergonea high degree of fatty degeneration are examined in the fresh state,neither the outlines of the epithelial cells nor their nuclei can berecognised, owing to the surface of the tubules appearing thicklycovered with fat-droplets (Fig. 145, a). Cloudy swelling, as well as fatty degeneration and necrosis, mayoccur both idiopathically (in various intoxications and infectivediseases) and also as part of the phenomena of nephritis. Thenecrosis at times affects chiefly or exclusively the epithelium of e^—^. Fig. 140.—Amyloid Dkgeneration of thr Kidney. x 545. (Gentian violet.)a, Urinary tubules with membrana propria in a state of amyloid degeneration ; h, Vasaflferens of a glomerulus in amyloid degeneration; c, Amyloid-degenerated parts in theglomerular loops; d, Small artery with amyloid defeneration of its wall; <?, Waxy castin lumen of urinary tubule ; /, Normal m-inary tubule. the glomerular loops, which is then cast off and blends with theexudation escaping from the loops (in consequence of the necrosis)to form a finely-granular mass. The loops of the glomeruli, deprivedof their epithelium, appear pale, swell up, and may finally lose theirendothelium also. Necrosis much more rarely affects the epitheliumlining Bowmans capsules, or the endothelial cells of the capillariesand veins. ATROPHY 293 Amyloid degeneration (Fig. 146) first and foremost attacks theglomeruli, of which single loops (c) ar
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
