What is the difference between metastatic and dystrophic calcification?
Answer:
Metastatic calcification: Deposition of calcium in Normal tissue due to hyperglycaemic state. E.g. in normal conjunctiva.
Dystrophic calcification: Deposition of calcium in hyalinised or necrotic tissue in a normocalcemic state. E.g. calcified TB in lungs, phthisis bulbi
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Pathology
- What is the pathology in pinguecula and pterygium formation.
- What is seen microscopically in posterior polymorphous dystrophy (endothelial)?
- Describe 3 conditions with which iridocorneal endothelial syndrome is associated.
- What is CHED?
- Can granular dystrophy recur in a graft?
- What is seen histologically in granular corneal dystrophy?
- How is mucopolysaccharide in macular corneal dystrophy visualised histologically?
- True or false: Macular dystrophy does not usually recur in a graft.
- Macular corneal dystrophy is a localised form of which storage disorder?
- What does macular dystrophy look like?
- What is the mode of inheritance of macular corneal dystrophy?
- What is seen on Congo-red staining of corneal sections in lattice dystrophy?