Interobserver Discrepancy Using The 1998 World Health Organization/International Society Of Urologic Pathology Classification Of Urothelial Neoplasms: Practical Choices For Patient Care

Abstract
Conclusions The 1998 World Health Organization/International Society of Urologic Pathology classification of urothelial neoplasms requires certain discriminations that cannot be reliably made by practitioners. Modifying the scheme to create categories of low grade neoplasm and high grade carcinoma would markedly increase its practical value to patients without significantly altering patient care.