Fig. 4From: Clinical and CT findings of COVID-19: differences among three age groupsTypical pGGO case a: Moderate type patient. CT showed multiple pGGOs in the bilateral lung lobes with halo sign (arrow). Some of the lesions were located under the pleura. Typical mGGO case b: Moderate type patient. CT showed a subpleural mGGO within a solitary nodule (arrow)Back to article page