Streptococcus pneumonia is characterized by the consolidation of lobes or lobules without GGO. Both mycoplasma and aspiration peumonia distribute along bronchovascular bundle, which is significantly different from COVID-19 pneumonia. In study comparing chest CT from 219 patients with COVID-19 pneumonia in China and 205 patients with other cause of viral pneumonia in the United States, COVID-19 pneumonia cases were more likely to have a peripheral distribution (80 versus 57 percent), and GGO (91 versus 68 percent). COVID-19 patients more frequently had multifocal involvement on CT, compared with unifocalinvolvement in SARS and MERS.
Imaging of coronavirus disease 2019 part 22
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