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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Am J Surg Pathol. 2021 Jan;45(1):25–34. doi: 10.1097/PAS.0000000000001602

Figure 1:

Figure 1:

Case 4: Pre-treatment gastric biopsy shows a PD-NEC, LC (A, H&E) with a proliferation index of 70% (B, Ki67). Post-treatment H&E sections of the stomach show a more pleomorphic tumor morphology (C) and heterogeneous labeling of Ki67 with some areas showing <1% labeling (D).