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Fig. 5. —Nodular fibrosis with polygonal shape in 72-year-old man. Both reviewers interpreted lesion (arrow) as having coarse spiculation, pleural tag, and polygonal shape, and as being predominantly solid on transverse high-resolution CT images. Lesion size was measured as 8 mm by reviewer 1 and 9 mm by reviewer 2. Pathologic diagnosis was nodular fibrosis.