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.
© 2021 Ann Hepatobiliary Pancreat Surg