Unusual Suspect: A Case Report of Tubulocystic Renal Cell Carcinoma with Features of Cystic Renal Oncocytoma

Figure 2

(a) H&E, 3x

(b) Cysts of variable size lined by single and, focally multiple, layers of tumor cells in loose stroma, with hobnailing around the cysts; H&E, 10x

(c) Scattered papillary architecture in cystic background; H&E, 15x

(d) AMACR; 8x

(e) CK7; 8x

(f) RCC; 8x

(g) AMACR positive staining in same field as diffuse CK7 positivity; 10x

(h) RCC weakly and focally positive; 20x