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Papillary Urothelial Neoplasm of Low Malignant Potential, WHO/ISUP Classification, 2004

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Comments:
Note the orderly arrangement of urothelial cells and the lack of cytologic atypia. PUNLMPs are not benign lesions, unlike papilloma, and although the incidence of recurrences and progression is low, close follow-up is recommended. Most PUNLMPs correspond to Papillary Urothelial Carcinoma, Grade 1 according to the previously used WHO Classification, 1973.

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