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Updates in bladder and prostate pathology: Diagnostic consensus and clinical relevance
Katrina Collins1, Sounak Gupta2, Liang Cheng3
1Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
Human Pathology
|December 18, 2025
Summary
Recent updates from the International Society of Urological Pathology (ISUP) and Genitourinary Pathology Society (GUPS) refine bladder and prostate cancer grading and classification. These advancements improve diagnostic precision and patient outcomes in urologic pathology.
Area of Science:
- Urologic Pathology
- Oncology
- Cancer Diagnostics
Background:
- Accurate grading, staging, and classification are critical for bladder and prostate cancer management.
- International Society of Urological Pathology (ISUP) and Genitourinary Pathology Society (GUPS) have issued consensus updates.
- Refining diagnostic criteria addresses long-standing controversies in urologic pathology.
Purpose of the Study:
- To review high-impact developments in bladder and prostate cancer pathology.
- To highlight updated grading systems, T1 substaging, and urachal carcinoma classification.
- To discuss evolving prostate pathology perspectives, including intraductal carcinoma and aggressive variants.
Main Methods:
- Summary of recent literature and consensus statements.
- Focus on diagnostic challenges and practical implementation of new frameworks.
- Analysis of evolving concepts in urologic cancer pathology.
Main Results:
- Updated grading systems and T1 substaging for bladder tumors.
- Proposed hybrid grading approach and classification of urachal carcinoma.
- Discussion on intraductal carcinoma of the prostate (IDC-P), neuroendocrine tumors, aggressive variants, and Grade Group 1 (GG1) disease for active surveillance.
Conclusions:
- ISUP and GUPS frameworks are essential for improving patient outcomes.
- These updates reflect a trend toward greater diagnostic precision and reproducibility.
- Adoption of these updated guidelines is crucial for advancing urologic pathology practice.
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