Fig. 4From: Quantitative CT comparison between COVID-19 and mycoplasma pneumonia suspected as COVID-19: a longitudinal studyQuantitative changes in lung lesion volume. A Number of lobes involved. The lobes involved (A), number (B), and volume (C) of pneumonic lesions peaked within 7–14 days of symptom onset and then slowly decreased. Conversely, there were no peaks or declining trend over time in the MP groupBack to article page