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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Spindle cell oncocytoma (SCO) | 2B1 Spindle cell Oncocytoma (Case 2) S100 1
2B1,2 Immunoperoxidase stains were performed on submitted unstained sections and demonstrate strong tumoral immunoreactivity for S-100 protein.