The 1973 WHO classification of bladder tumours anticipated a probable need for eventual revision of the criteria for diagnosing papillary and flat bladder neoplasia. A workshop sponsored by WHO consisting of pathologists, urologists, cytologists, oncologists and basic scientists interested in bladder tumours addressed this subject and, after a follow-up meeting sponsored by the International Society of Urological Pathology, the classification and terminology used in this text were agreed upon. A major change is in the introduction of a new category: papillary urothelial neoplasm of low malignant potential. Many of the tumours previously designated as papillary transitional cell carcinoma, grade I now fall into that category. Another major change is in the designation of flat lesions, and this includes a definition of carcinoma in situ. Furthermore, a number of variant forms of urothelial carcinomas are included as well as new entities not recognized when the first edition was issued.
Histological classification of urinary bladder tumours; definitions and explanatory notes (epithelial tumours of the bladder, non-epithelial tumours, miscellaneous tumours, metastatic tumours and secondary extensions, unclassified tumours, epithelial abnormalities, tumour-like lesions); TNM classification of tumours of the urinary bladder.
Series: International Histological Classification of Tumours
Number Of Pages: 104
Publisher: SPRINGER VERLAG GMBH
Country of Publication: DE
Dimensions (cm): 24.41 x 16.99
Weight (kg): 0.2
Edition Number: 2
Edition Type: Revised