Fig. 3.

Pathologically proven case of a pleural nodule with osteal protrusion. (A) Axial computed tomography (CT) image in the mediastinal window showing a soft tissue density nodule on the tubercle of the sixth rib (arrow). (B) Axial CT image in the lung window showing the same lesion (arrow). (C) Sagittal CT image in the mediastinal window showing osteal protrusion to the soft tissue density nodule (arrow). (D) Intraoperative finding revealing the lesion belonged to the parietal pleura (arrow). (E) Macroscopic finding of the lesion showed a whitish solid nodule. (F) Microscopic examination with hematoxylin and eosin staining of the lesion revealing a benign fibrous tissue.