• Takaaki Kitayama, Hideya Kitamura, Eri Hagiwara, Katsuyuki Higa, Hiroko Okabayashi, Tsuneyuki Oda, Tomohisa Baba, Shigeru Komatsu, Tae Iwasawa, and Takashi Ogura.
• Department of Respiratory Medicine, Kanagawa Cardiovascular and Respiratory Center, Japan.
• Intern. Med. 2020 Dec 15; 59 (24): 3207-3211.

AbstractAn 84-year-old man was admitted with hypoxemia and ground-glass opacities with traction bronchiectasis in both lungs and mild fibrosis on computed tomography. We first suspected that he had acute exacerbation of interstitial pneumonia and initiated methylprednisolone pulse therapy. On day 4, he was diagnosed with coronavirus disease 2019 (COVID-19) pneumonia. Although the ground-glass opacities were improved with corticosteroid treatment alone, the hypoxemia persisted, and the plasma D-dimer level increased. Anticoagulant therapy was initiated, and the hypoxemia was improved. COVID-19 pneumonia may result in radiological findings similar to those of acute exacerbation of interstitial pneumonia, and corticosteroids and anticoagulant therapy may lead to favorable outcomes.

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