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Figure 5: Borderline/atypical proliferative/low malignant potential mucinous tumor. There is a complex intraglandular pattern which is a combination of focal papillary and cribriform-like growth and tangential sectioning. This pattern does not qualify for intraepithelial carcinoma by any of the proposed criteria because there is insufficient nuclear atypia or true cribriform growth.
Submitted by Brigitte Ronnett, MD