Fig. 2From: The papilla as a biomarker in the molecular era of bladder oncologyPapillary urothelial lesion (H&E; 10x). It is defined by the presence of a fibrovascular core, which is depicted transversally in the center of the figure, and longitudinally in the right side. It is a low grade well differentiated lesion, with relatively uniform cytology and maintenance of polarity towards the basement membraneBack to article page