METASTATIC CALCIFICATION IN THE LUNG APEX

This previously unreported pattern was encountered in two recent cases. The unusual distribution can be misleading, for it is reminiscent of the calcification seen in infectious granulomatous disease. Recognition of the various potential radiographic appearances of metastatic pulmonary interstitial calcification is important, because in severe cases such calcification can cause pulmonary insufficiency and death. When the condition is identified in time, proper therapeutic measures can lead to its reversal.