Fig. 3
From: Differentiation of pulmonary solid nodules attached to the pleura detected by thin-section CT
SPAN with pleural thickening and type II of nodule-pleura relationship. A 53-year-old man with right lower lobe SPAN which is confirmed as an inflammatory lesion. On the axial enhanced CT image, it is found that there is a visible increase in pleural thickness (red dashed line) beyond the normal pleural appearance adjacent to the nodules (pleural thickening). R-thickening is defined as the ratio of the length of adjacent thickened pleura (red dashed line) to nodule diameter (yellow dashed line). Its R-thickening is 1.39. The nodule-pleura relationship is type II (nodule clinging to the thickened pleura without pleural infiltration)