PMC7381928_01
Chest imaging. Chest X-ray on admission showed bilateral ground-glass opacities (a). Chest computed tomography (CT) on admission showed mild and bilateral ground-glass opacities (b). There were no pleural effusions or significant lymphadenopathy. Chest CT performed on HD 5 showed worsening of ground-glass opacities and consolidation (c).
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He presented to our hospital on day 12 for regular follow up by his cardiologist, and chest X-ray (Fig. 1a) and computed tomography (CT) scan (Fig. 1b) showed bilateral ground-glass opacities, for which he was referred to a pulmonary physician. Chest CT performed on HD 5 showed worsening of ground-glass opacities and consolidation (Fig. 1c).
Clinical course of the patient. Body temperature decreased to <37  C on hospital day 8. C-reactive protein gradually decreased. Blood gas analysis worsened after admission and then improved. IgG antibody against SARS-CoV-2 was negative on admission but turned positive. IgM antibody against SARS-CoV-2 was negative throughout the clinical course.. RIAT, rapid immunochromatographic antibody test.. HD, hospital day.
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HIV and Trichosporon asahii, which is the most frequent antigen of hypersensitivity pneumonitis in Japan, were negative He was admitted to our hospital on day 17 (hospital day [HD] 1) and was followed up without antibiotics. However, his fever continued (Fig. 2), and general fatigue increased after admission.