PMC8113621_01
Intraoperative images. (A) Excised left lung. (B) The tumor.
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F1
To excise the upper and lower pulmonary veins, we opened the pericardium and successfully resected the total left lung and cleaned the 4, 5, 7, 9, and 10th nodes (Figure 1).
Pathological examination. (A) x100 and (B) x400. Hematoxylin and eosin staining shows a large number of small, round malignant cells. Immunohistochemical staining for (C) creatine kinase (CK), (D) Friend leukemia virus integration 1 (FLI-1), (E) neuron-specific enolase (NSE), (F) CD99, (G) anaplastic lymphoma kinase (ALK), and (H) KI-67.
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F2
The tumor cells were negative for cytokeratin 7, P40, thyroid transcription factor-1, CD56, chromogranin A, vimentin, CD30, CD43, alpha-inhibin, myeloperoxidase, S-100, and CD138 (Figure 2).