Hyperprogression after anti-programmed death-1 therapy in a patient with urothelial bladder carcinoma: A case report

Figure 1 Histological pattern of fine needle puncture of the abdominal subcutaneous nodule. A and B: Hematoxylin and eosin staining of four sites in the fine needle biopsy specimen showed esophageal squamous cell carcinoma (magnifcation × 40); C-L: Immunohistochemistry for AE1-AE3, CgA (-), CK7 (+), CK34βe (+), GATA3 (-), Ki-67 (index 80%), P63 (-), PAX-8 (-), Syn (-), and TTF-1 (-) in a serial section of the same specimen in shows positive staining predominantly in the tumor tissue (magnification × 40).