Metastatic Pulmonary Calcification in Primary Hyperparathyroidism

Metastatic pulmonary calcification (MPC) developed in a patient with primary hyperparathyroidism. Renal function was only minimally impaired (creatinine clearance of 65 ml/min) the day prior to appearance of the lung infiltrate, but deteriorated (creatinine clearance of 14 ml/ min) concomitantly with the appearance of MPC. Lung imaging with^99mTc bone-scanning agents helps differentiate MPC from other problems with similar clinical and roentgenographic findings, thus allowing prompt therapy.

(Arch Intern Med 137:520-522, 1977)