File:Urinary analysis and diagnosis by microscopical and chemical examination (1906) (14784781105).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. 21.—Crystals of Uric Acid, from Highly Acid Urine (X 450). of uric-acid concretions in the bladder. These crystals appear in peculiarspear, comb, and brush shapes or in exaggerated lozenges. The spearshapes are in many cases very pronounced. In persons in whom the so-called uric-acid diathesis exists, these forms are frequently seen. Still another variety of uric acid (see Fig. 22) consists of concretionsof varying sizes, irregular plates, masses, and needles, either single, CRYSTALLINE AND AMORPHOUS SEDIMENTS. 73 double, or conglomerated in the form of stars. Occasionally dumb-bellforms are also met with. The passage of such concretions or gravelproper, when at all abundant, is almost invariably accompanied by moreor less severe pain. When in larger masses, we have the uric-acid cal-
Text Appearing After Image:
Fig. 22.—Uric-acid Coxcretioxs (X 500). culi or stones, which form the largest number of renal stones, being per-haps seventy per cent of all calculi passed. Quite frequently small, irregular plates of a light or dark yellow colorare seen under the microscope; the sediment in which these are foundmay be of a mucous or granular character, which gives no indication ofcontaining any uric acid. Different varieties of uric acid with calcium-oxalate crystals and occasionally a varying amount of urates are not in- 74 UBINABY ANALYSIS AND DIAGNOSIS. frequently met with in the same specimen. When these features are!present, the diagnosis of lithccmia is justified. Although in almost all cases there will be no difficulty in recognizing ;uric acid under the microscope, there may be extremely pale, practically Icolorless lozenges or irregular plates which might be mistaken for phos- I :i

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