Fig. 19From: Chest X-ray findings monitoring COVID-19 disease course and severity41-year female with positive COVID-19 virus. Initial chest X-ray (a) was normal. On the 3rd day, follow-up chest X-ray (b) shows a well-defined large solitary pulmonary nodule (arrow) at the periphery of the left middle lung zone with TSS as 1. On the 18th day (c), the lesion was partially resolved with faint density (arrow)Back to article page