Annals of Hepato-Biliary-Pancreatic Surgery

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Fig. 4.

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Fig. 4. Microscopic findings of infiltrating urothelial carcinoma. (A, B) Urothelial carcinoma cells showed high grade nuclear atypia and solid tumor nests (A) or glandular structures (B). Urothelial carcinoma cells were diffuse positive for CK7 (C) and GATA-3 (F) but negative for p63 (G) and PAX-8 (H) in immunohistochemistry studies. Most of tumor cells were also negative for CK20 (D). However, 10% of tumor cells were positive for CK20 (E) (A, B: ×200; C–H: ×100).
Ann Hepatobiliary Pancreat Surg 2021;25:440-4
© 2021 Ann Hepatobiliary Pancreat Surg