On gall-stones or cholelithiasis.

  • Brockbank, E. M. (Edward Mansfield), 1866-
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: On gall-stones or cholelithiasis. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    The presence of cholesterin is generally hard to demonstrate, and it may even be absent entirely in this form of gall-stone. 6. Barer Forms of Biliary Calculi.— (ft) Amorphous or Imperfectly Crystallised Cholesterin Gall-stones are calcnli which, as a rule, resemble pearls in outward appearance. They vary in size between that of a grain of sand and that of a large pea, and they con- tain a dark nucleus of bilirubin-calcinm formation. In structure they are imperfectly crystalline, show no stratification, and apart from the central nucleus con- sist entirely of cholesterin. {h) Calcium Carbonate occurs in many stones, either in the free state or combined with biliary pigments. It rarely, however, as uncombined chalk forms the main constituent of a biliary calculus. Gall-stones containing much chalk are alwaj^s very hard. Frerichs described a large biliary calculus which was coated with chalk, and calcified conditions of the walls of the gall-bladder are at times met with. [c] Concretions containing Foreign Bodies.—It fre- quently happens that a calculus which is composed chiefly of cholesterin contains a nucleus of bilirubin- calcium formation, or a crystal of cholesterin may be the starting point and be contained in the centre of a bilirubin-calcium stone. Although a small biliary concretion may act as a nucleus for the growth of a much larger calculus, it rarely happens that a true foreign body is found in the centre of a gall-stone. A few cases of this nature have, however, been recorded, such as a round-worm, a Distoma hepaticum,