Fig. 4From: Mucinous tubular and spindle cell renal cell carcinoma: a review of clinicopathologic aspectsImmunohistochemical features of MTSRCC. The neoplastic cells of both the tubules and spindle cells stain consistently positively for (a) CK7 and (b) AMACR. Most cases stain positively for (c) vimentin. A minority of cases may show neuroendocrine differentiation, as depicted here, express (d) chromogranin ABack to article page