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Figure 2: Excised carina with tumor (a). (b) Tumor involving the carina, lower trachea, and left main bronchus (arrow is pointing to the right main bronchus). Microphotograph (c) is showing spindle cell tumor arranged in a palisading fashion (verocay bodies) and the prominence of blood vessels without necrosis or mitosis (H and E, ×200). Microphotograph (d) shows positivity of tumor cells for S-100 (Immunoperoxidase, ×200)

Figure 2: Excised carina with tumor (a). (b) Tumor involving the carina, lower trachea, and left main bronchus (arrow is pointing to the right main bronchus). Microphotograph (c) is showing spindle cell tumor arranged in a palisading fashion (verocay bodies) and the prominence of blood vessels without necrosis or mitosis (H and E, ×200). Microphotograph (d) shows positivity of tumor cells for S-100 (Immunoperoxidase, ×200)