File:Urinary analysis and diagnosis by microscopical and chemical examination (1906) (14598171288).jpg

Identifier: urinaryanalysi00heit (find matches)
Title: Urinary analysis and diagnosis by microscopical and chemical examination
Year: 1906 (1900s)
Authors: Heitzmann, Louis, 1864- (from old catalog)
Subjects: Urine Diagnosis
Publisher: New York, W. Wood and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Fig. 69.—Fatty Casts (X 500). C, Casts from convoluted tubules; N, from narrow tubules; *S, from straight collecting tubules. resemble the former considerably. The substance of all the casts so farmentioned is the same, the difference in appearance being given by theouter adhering formations. Conglomerations of variously sized, some-times large, fatty globules, without well-marked contours, showing theiroriginal substance, cannot be classed as true casts. Fatty casts contain a varying number of small, glistening fat-globules TUBULAR CASTS. 141 and -granules, which give to the cast a high refraction, the cast beingeither completely or partially filled with them. As they are secondaryproducts only, it follows that, even when they are present in small num-bers, the diagnosis of a chronic process is justified; the more so, the morecompletely they are formed. The commencement of their formation can
Text Appearing After Image:
Fig. 70.—Waxy Casts (X 500). C, Casts from convoluted tubules; N, from narrow tubules; S, from straight collecting tubules. frequently be seen in both epithelial and granular casts, the granules be-coming more glistening and highly refractive, and finally changing toglobules. When the casts are present in large numbers, they always de-note a pronounced fatty degeneration of the kidney, as found in the largewhite kidney. 6. Waxy Casts (see Fig. 70).—Waxy casts are different in their chem- 142 URINARY ANALYSIS AND DIAGNOSIS. ical nature from hyaline casts; they are characterized by wavy, flutedcontours, a high refracting power, a more or less yellowish color, and ahigh degree of brittleness. They vary greatly in size, and are alwaysmore or less irregular, on account of their frequently broken contours.Sometimes their wavy, fluted appearance is extremely pronounced, andthey may resemble regular corkscrew windings.

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