Licence: Public Domain Mark
Credit: Outlines of human pathology / by Herbert Mayo. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![Hypertrophy takes place in those cases in which one kid- ney alone has been formed : the single kidney is of unusual magnitude, but of the normal shape. \_x. 40.] Atrophy of the cortical substance is liable to be produced by any cause that mechanically obstructs the flow of the urine ; the back- ward pressure of the urine in such cases upon the pelvis and infundibula of the kidney, produces dilatation, and a wonder- ful expansion of the cortical substance, which gradually spreads into a thin loculated membranous sac. [x. 42. 43.] It occasionally happens, when the kidney has been for some time expanded into a membranous sac, through a calculus obstructing the pelvis, and the calculus is not got rid of in any way, that after a time, the urine which distends the kidney is absorbed; the membranous sac at the same time wastes and shrinks, and is finally reduced to a mere capsule containing the stone. 2. Ancsmia, or paleness of the kidney, and hypercEmia, ova dark and loaded state of the vessels, attended in extreme cases with spots of extravasation, are common appearances. 3. Acute wjiammation. I have never had an opportunity of seeing the appearance which this disease presents upon a post mortem inspection. It rtgrely terminates fatally. In- creased vascularity, with softening and brittleness of texture, would, I suppose, characterize it. The symptoms are fever, vomiting, pain in the loins, colicky pains of the belly, the urine scanty, the bladder ii-ritable. 4. One of the most important varieties of chronic irrftam- mation was discovered, and its true pathological value deter- mined, by Dr. Bright, in whose reports the practitioner may see faithful delineations of the different stages of the complaint. The cortical part of the kidney at first mottled with interstitial deposit of fibrin; then indurated and granu- lated from the consolidation of the renal lobuli; and finally, entirely converted into a yellowish white seemingly homo- geneous substance—form the progressive steps of the mor- bid alteration. 5. Abscess of the kidney is ordinarily the result of pro- tracted common inflammation, originating in whatever cause. It is however most frequently a secondary consequence of](https://iiif.wellcomecollection.org/image/b21066735_0553.jp2/full/800%2C/0/default.jpg)
