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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Spindle cell oncocytoma (SCO) | 3A2 Spindle cell oncocytoma (Case 3) H&E 1
Sections reveal a solid-appearing, predominantly spindle cell tumor with clear to granular eosinophilic cytoplasm. Islands of more epithelioid morphology are also seen.