calcification

calcification (kal´si-fi-ka´shun)

1. Deposition of lime or other insoluble calcium salts. 2. A process in which tissue or noncellular material in the body becomes hardened as the result of precipitates or larger deposits of insoluble salts of calcium (and also magnesium), especially calcium carbonate and phosphate (hydroxyapatite) normally occurring only in the formation of bone and teeth.calcareous infiltration; [L. calx, lime, + facio, to make]
dystrophic c. c. occurring in degenerated or necrotic tissue, as in hyalinized scars, degenerated foci in leiomyomas, and caseous nodules.
eggshell c. a thin layer of c. around an intrathoracic lymph node, usually in silicosis, seen on a chest radiograph.
metastatic c. c. occurring in nonosseous, viable tissue (i.e., tissue that is not degenerated or necrotic), as in the stomach, lungs, and kidneys (and rarely in other sites); the cells of these organs secrete acid materials, and, under certain conditions in instances of hypercalcemia, the alteration in pH seems to cause precipitation of calcium salts in these sites.
Mönckeberg's c. Mönckeberg's arteriosclerosis
Mönckeberg's medial c. Mönckeberg's arteriosclerosis
pathologic c. c. occurring in excretory or secretory passages as calculi, and in tissues other than bone and teeth.
pulp c. endolith

 

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