Isolated Renal Metastasis from Non-Small-Cell Lung Cancer: Report of 2 Cases

Figure 4

Histology of renal tumor of case 2 showed carcinoma cells arranged in nests, cords, or tubules. Immunohistochemically, the tumor cells are positive for TTF-1, napsin A, and surfactant apoprotein (not shown) (H & E, ×100).