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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Granular cell Tumor | 3C1 Granular cell tumor, infundibulum (Case 3) PAS 1
3C1,2 PAS without (3C1) and with diastase (3C2) show strong tumor cell labeling in both preparations (i.e., the stored material is not glycogen).