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File:IPLab2Calcification7.jpg|A closer view of this same aortic valve (arrow) illustrates the nodularity and thickening of this valve. This valve would be extremely stiff and almost entirely immobile. This particular example of dystrophic calcification is associated with a degenerative change of the aortic valve due to an unknown cause.
File:IPLab2Calcification8.jpg|This gross photograph affords a closer view of the same aortic valve. Note the nodularity and thickening of this valve due to fibrosis and dystrophic calcification.
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== Study Questions ==
* <spoiler text="Contrast metastatic calcification and dystrophic calcification.">Dystrophic calcification occurs in necrotic tissue with normal serum calcium levels; metastatic calcification occurs in normal tissue and requires elevated serum calcium levels.</spoiler>
* <spoiler text="What are some causes of hypercalcemia?">* Hyperparathyroidism
* Vitamin D intoxication
* Systemic sarcoidosis
* Milk-alkali syndrome
* Hyperthyroidism
* Addison's disease
* Increased bone catabolism
* Hypercalcemia of malignancy</spoiler>
{{IPLab 2}}
[[Category: IPLab:Lab 2]]