Tunica vaginalis testis metastasis as the first clinical manifestation of pancreatic adenocarcinoma: A case report

Figure 3 ematoxylin and eosin and immunohistochemical staining of the tunica vaginalis tumors. A and B: Infiltration of malignant cells into tunica vaginalis tissue were observed (Hematoxylin and eosin, 200 ×). (A: scale = 50 μm; B: scale = 100 μm); C: Immunohistochemical staining indicates cytokeratin 5/6 (CK 5/6)-positive; D: CK20-positive; E: CK7-positive in the tunica vaginalis tumors (3, 3′ diaminobenzidine, 200×) (C, D, and E: scale = 50 μm).