
Unacceptable diastase resistant periodic acid Schiff (DPAS) positivity. (A) A sheet of benign epithelial cells at the edge of which is a cell containing intracytoplasmic glycogen granules staining positively for DPAS (DPAS stain, AC2); (B) a sheet of benign epithelial cells demonstrating branching luminal DPAS positivity (DPAS stain, AC2).








