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Figure 2: (a) Triphasic histologic pattern of adult Wilm's tumor comprising epithelial components forming tubular pattern (solid arrow), stromal component (hollow arrow), and blastemal component (asterisk) (H and E, ×100). (b) Well-differentiated squamous epithelium with abundant keratin production (hollow arrow) and cartilaginous areas (asterisk) (H and E, ×100). (c) The components were negative for WT1 staining (×100). (d) Predominantly epithelial component is highlighted by pancytokeratin positivity (×200)

Figure 2: (a) Triphasic histologic pattern of adult Wilm's tumor comprising epithelial components forming tubular pattern (solid arrow), stromal component (hollow arrow), and blastemal component (asterisk) (H and E, ×100). (b) Well-differentiated squamous epithelium with abundant keratin production (hollow arrow) and cartilaginous areas (asterisk) (H and E, ×100). (c) The components were negative for WT1 staining (×100). (d) Predominantly epithelial component is highlighted by pancytokeratin positivity (×200)