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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Granular cell Tumor | 1J2 GCT (Case 1) EM 001 - Copy

1J2,3 This cell with a dense nucleus contains large numbers of multi-vesicular bodies most consistent with autophagosomes. Distinguishing these elements from the mitochondrial aggregates characteristic of spindle cell oncocytoma is not difficult but other elements seen in the cytoplasm of this cell remain unidentified (Electron Micrograph)

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