Progressive metastatic pulmonary calcification after successful renal transplantation.

Metastatic pulmonary calcification is a complication of patients with renal failure [1], but is rarely seen after successful renal transplantation. A 51-year-old Japanese male demonstrated progression of diffuse pulmonary ground-glass attenuations over time. He had been treated with oral corticosteroids and immunosuppressants since undergoing left renal transplantation from his mother at 26 years of age. A chest radiograph (fig. 1a and b) and high-resolution computed tomography (fig. 1c, d, e, g and h) showed diffuse centrilobular groundglass attenuations and partly high-density areas. These findings had slowly worsened over time. Tc-methylene diphosphonate (Tc-MDP) scintigraphy demonstrated high bilateral pulmonary uptake, especially in the upper and posterior lung fields (fig. 1f). This case is considered as continuously progressive metastatic pulmonary calcification after successful renal transplantation.