Thought to be pre-programmed genetically in each species, but modifiable by environmental factors. The general protein types are amyloid light chain protein and amyloid protein. Amyloid can be differentiated from hyaline by its positive reation with the Congo red stain. May be of dystrophic or metastatic types. Dystrophic occurs in previously injured tissue with normal serum calcium levels.
Metastatic calcification occurs in normal tissues with elevated serum calcium levels.
Typical of tuberculosis , but may be seen in some fungal diseases, such as histoplasmosis. The deterioration of cell function following non-lethal cell injury. Literally, it means disordered growth. Literally, the study of causes. Usually seen in the extremities, and requires amputation.