SHORT COURSE #07
An Approach to the Diagnosis of Bladder Lesions in Biopsy and Transurethral Resection Specimens
Section 1 -
WHO (2004)/ISUP Classification of Bladder Tumors
Mahul B. Amin, MD
Jesse K. McKenney, MD
Flat Lesions with Aytpia
Reactive (Inflammatory) Atypia
Atypia of Unknown Significance
Dysplasia (Low-grade Intraurothelial Neoplasia)
Carcinoma In Situ (High-grade Intraurothelial Neoplasia)**
Papillary Neoplasm of Low Malignant Potential (PUNLMP)
Papillary Carcinoma, Low grade
Papillary Carcinoma, High grade
*May include cases formerly diagnosed as "mild dysplasia"
** Includes cases with "severe dysplasia"