Fig. 6From: Classification of renal cell tumors – current concepts and use of ancillary tests: recommendations of the Brazilian Society of PathologyMetanephric adenoma. The gross appearance was of a predominantly cystic tumor in this particular case (a). Microscopy shows small tubules and glomeruloid structures (b HE, 400x). Characteristic immunoprofile includes diffuse staining for WT1 (c 100x) and BRAF VE1, a surrogate immunohistochemical marker of BRAF V600E mutation (d 40x)Back to article page