Figure 2.

Immunohistochemical staining of Ki-67 expression in residual colorectal liver metastases after chemotherapy and its prognostic outcomes. A. Hematoxylin-eosin staining (left) and high Ki-67 expression (right); B. Hematoxylin-eosin staining (left) and low Ki-67 expression (right); (Scale bars, 100 µm); C. A Kaplan-Meier survival analysis of disease-free survival (left panel) and overall survival (right panel) between high and low Ki-67 expression levels in patients with conversion therapy; D. A Kaplan-Meier survival analysis of disease-free survival (left panel) and overall survival (right panel) between high and low Ki-67 expression levels in patients with straight hepatectomy. The log-rank test was used.