Relapsed papillary urothelial neoplasm of low malignant potential (PUNLMP) of the young age: a case report and a review of the literature

Background Papillary Urothelial Neoplasm of Low Malignant Potential (PUNLMP) are exceptionally rare in the first decade of life (mostly if multifocal) and there is a lack of standardized recommendations for the pediatric age.