Nodules ≤30 mm were included in the study.

† A spiculated nodule has linear strands (coarse ≥ 2 mm thick, fine < 2 mm thick) extending from the nodule into the lung parenchyma but not extending to the pleura.³

References

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3. Zwirewich, C. V., Vedal, S., Miller, R. R. & Müller, N. L. Solitary pulmonary nodule: high-resolution CT and radiologic-pathologic correlation. Radiology 179, 469–476 (1991).