Clinical lectures on the principles and practice of medicine . fibrous exudation, colloid and fatty matter, fluid holding variouscrystals in suspension, whether fatty (cholesterine or margarine), or saline(phosphates, urates, etc.). I have frequently seen all the forms in thefollowing figure (Fig. 474), and occasionally the radiated bodies repre-sented Fig. 321. 2. That numerous cysts may form from distention of the minute sacssurrounding the malpighian body, I have satisfied myself of by carefulexamination, and possess preparations demonstrating the fact. In thiscase, the cysts are generally
Clinical lectures on the principles and practice of medicine . fibrous exudation, colloid and fatty matter, fluid holding variouscrystals in suspension, whether fatty (cholesterine or margarine), or saline(phosphates, urates, etc.). I have frequently seen all the forms in thefollowing figure (Fig. 474), and occasionally the radiated bodies repre-sented Fig. 321. 2. That numerous cysts may form from distention of the minute sacssurrounding the malpighian body, I have satisfied myself of by carefulexamination, and possess preparations demonstrating the fact. In thiscase, the cysts are generally numerous and scattered through the corticalsubstance. It would appear to arise from some obstruction at the com-mencement of the excreting duct, although I have never been able todetect any. Fluid collects outside the membrane in immediate con-tact with the tuft of vessels constituting the malpighian body, and insideanother membrane continuous with the basement membrane of the , it is in cases of this kind that we may satisfy ourselves that the. Fig. 474. membrane investing the tuft of vessels is really double, forming a shutserous sac, in the cavity of which the fluid accumulates. This fluid isinvariably clear, various in quantity, but each cyst seldom exceeds a smallpea in size. As it forms, it gradually presses on the vascular tuft, andcauses its atrophy, and so impedes the secretory power of the organ. 3. The third form of cystic formation in the kidney evidently ori-ginates in the secreting cells themselves, as they may be seen, on amicroscopic examination, to exist in clusters, varying in size from the600th to the 16th of an inch in diameter. In such a case, the paren-chyma of the organ seems to be infiltrated with them, and stronglyreminds the observer of a section of the ovary, loaded with Graafianvesicles. Many still retain tbeir nucleus, whilst in others it has disap-peared. Mr. Simon of London, who first described this form of cystic Fig. 474. Structures
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
