Urothelial Proliferation of Unknown Malignant Potential Involving the Bladder Histopathologic Features and Risk of Progression in De Novo Cases and Cases With Prior Neoplasia

摘要

Context.-Urothelial proliferation of unknown malignant potential (UPUMP) is a 2016 World Health Organization classifier that encompasses prior categories of flat and papillary urothelial hyperplasia. In addition, UPUMP occurs in settings of both de novo and prior bladder neoplasia.