Kidney re-transplantation after living donor graft nephrectomy due to de novo chromophobe renal cell carcinoma: A case report

Figure 1 Contrast-enhanced computed tomography image of the patient. A giant heterogeneously enhancing cystic-solid mass measuring 10 cm × 10 cm × 15 cm involving the upper pole of the kidney allograft was revealed.

Figure 2 Microscopic photographs of the renal graft tumor. A: Hematoxylin and eosin staining shows large and polygonal tumor cells, with clearly membrane and polymorphic nuclei. Binucleation can be seen (200 ×); B: Immunohistochemical staining shows positive expression of cytokeratin 7 (200 ×); C: Immunohistochemical staining shows tumor cells positive for cytokeratin 8 (200 ×); D: Immunohistochemical staining shows that cluster of differentiation (CD) 117 is diffusely positive in the cytoplasm/membrane (400 ×); E: Immunohistochemical staining shows that E-cadherin is positive (200 ×); F: Immunohistochemical staining shows that tumor cells are negative for CD10 (200 ×); G: Immunohistochemical staining shows that tumor cells are negative for vimentin (200 ×); H: The cytoplasm of tumor cells appear blue on Hale colloidal iron staining (40 ×).