We report a case of metastatic pulmonary calcification that appeared on high-resolution CT (HRCT) as multiple, lobular, ground-glass opacities sparing the perilobular area. Diffuse metastatic calcification such as that in our case was considered to be a result of postoperative transient acute renal failure. Decreasing alveolar air spaces due to both alveolar septal fibrosis and calcification caused the diffuse ground-glass opacities in the present case.