<prompt> Which of the following is not a common site for metastatic calciGastric mucosaKidneyLungParathyroid  <response>: Metastatic calcification may occur widely throughout the body but principally affects.Interstitial tissues of gastric mucosaKidneysLungsSystemic arteries andPulmonary veinsThe common feature of all these sites, which makes them prone to calcification is that they can lose acid and therefore they have an internal alkaline component favourable for metastatic calcification.Also, knowMetastatic calcification occurs in normal tissues whenever there is hypercalcemia.Usually, deposition of the calcium does not cause any clinical dysfunction but sometimes massive deposition in the lung may produce abnormality and in kidneys may produce nephrocalcinosis. 