Fig. 2

A 67-year-old female with invasive adenocarcinoma. a A well-defined patchy mGGO locates in the left upper lobe. The irregular solid component (red arrow) is surrounded by GGO. Coronal (b) and sagittal (c) images show that the lesion surrounds the bronchi and blood vessels, and its long axis is consistent with their direction. The lumen of internal bronchi is dilated. d VR image shows that the lesion distributes along the blood vessels. GGO, ground-glass opacity; mGGO, mixed ground-glass opacity; VR, volume rendering