A Case of Pulmonary Sarcoma with Significant Extension into the Right Lung

Figure 3

(a) Gross finding showed the obstruction of the right main pulmonary artery by tumor tissue. (b) Transverse sections revealed a massive invasion of the tumor into the adjacent pulmonary parenchyma. (c) Histologically, tumor was consisting of spindle or polygonal-shaped atypical cell with high mitotic activity, compatible with intimal sarcoma. (d) At the margin of the left main pulmonary artery, pleomorphic tumor cells proliferated in the vascular intima (arrows).

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