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Figure 1. Borderline/ atypical proliferative/ low malignant potential mucinous tumor, gastrointestinal type. Cystic component with stratified epithelium: low-power magnification of one case (1A) and intermediate-power magnification of another case (1B). High-power magnification of Fig. 1A (1C) showing cystic component lined by columnar cells with mucinous cytoplasm and low nuclear-to-cytoplasmic ratio. The nuclei are round to oval, basally situated, and feature only mild atypia. Submitted by Russell Vang, MD