Koharu Harada, Takunori Ogawa, Ryosuke Nagaoka, Hiromi Edo, Hiroaki Sugiura, Taiki Nozaki, Yoshifumi Kimizuka
A 55-year-old man with idiopathic eosinophilic pneumonia developed rapidly progressive dendriform pulmonary ossification with branching pulmonary calcifications on CT. Corticosteroid treatment improved both pulmonary consolidations and calcified lesions, suggesting that acute or immature pulmonary calcification may be reversible.