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Morphological patterns of the bubaline urothelial tumors. Papilloma (a), H&E, Objective 10x; papillary urothelial neoplasm of low malignant potential (PUNLMP). Notice the diffuse reactive atypia, that is, the presence inflammatory cells into the urothelium (b) H&E, Objective 10x; papillary carcinoma (c) H&E, Objective 20x; invasive carcinoma (d) H&E, Objective 20x.
