Figure 1.

A-F, Value of multiplanar reformatted images for evaluating suspected lesions. A, An 83-year-old man with subsolid opacity in the paraspinal right lower lobe on axial image, believed to represent fibrosis. B, Coronal image exhibits an ovoid convex shape, atypical for scarring, and fissural tethering, which has been described with malignant lesions. On imaging 8 years later, the lesion has progressed in size and is now solid, with round shape in the axial plane (C) and increased fissural bowing in the coronal plane (D). The lesion was invasive adenocarcinoma on resection. E, Periosteophyte fibrosis may appear nodular in the axial plane. F, Coronal images show the craniocaudal distribution of fibrosis to better advantage.