Combination therapy with toripalimab and anlotinib in advanced esophageal squamous cell carcinoma: A case report

Figure 2 Histopathological examination by hematoxylin-eosin staining. A and B: Heterogeneous proliferation of tissue squamous epithelium. The heterogeneous cells break through the basement membrane and infiltrate below the mesenchyme (40 ×, 200 ×); C and D: The squamous epithelial cells were markedly heterogeneous and showed infiltrative growth, and a little lymphoid tissue was seen in their periphery (40 ×, 200 ×).