Fig. 2

A representative case of a patient with pulmonary metastasis from transitional cell carcinoma with a ground-glass opacity component on preoperative computed tomography. A A pulmonary nodule containing both solid and ground-glass opacity components was located in the left upper lobe on preoperative computed tomography. B HE staining of the pulmonary metastasis from transitional cells, low-power view. Inflammatory cell infiltration into the alveolar spaces is observed adjacent to the site of pulmonary metastasis