Fig. 5. (A) High-power microscopic image of H&E-stained slide at 400× magnification, which shows tubular architecture and high-grade nuclear features, and papillary architecture with fibrovascular cores, high nuclear grade, and an absence of mucin production. (B, C) Immunohistochemical stain for MUC1 (B: 400× magnification, C: 200× magnification) showing membranous luminal expression. (D) Immunohistochemical stain for CK7 (200× magnification) showing positive membranous and cytoplasmic expression.

Ann Hepatobiliary Pancreat Surg 2021;25:556-61 https://doi.org/10.14701/ahbps.2021.25.4.556

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