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High Grade Prostatic Intraepithelial Neoplasia and Atypical Glands
Introduction High-grade prostatic intraepithelial neoplasia (HGPIN) and atypical small acinar proliferation (ASAP) are intermediaries to distinctly benign or malignant diagnoses on prostate biopsy. HGPIN is a true pathologic entity and the only accepted precursor to prostate adenocarcinoma. ASAP on the…