Prognostic pathological factors in radical cystectomy after neoadjuvant chemotherapy

Histopathology
Fadi BrimoKiril Trpkov

Abstract

We undertook a systematic evaluation of the prognostic value of numerous histological factors in 165 radical cystectomies (RCs) of patients with invasive urothelial carcinoma (UC) who underwent surgery after neoadjuvant chemotherapy (NAC). Tumour regression grade (TRG) and therapy-related stromal and epithelial changes were also recorded. Locally advanced disease (≥pT2 and/or pN+) was present in 64% of patients, 22% had no evidence of residual carcinoma (pT0 + pN0), and 28% had no evidence of residual muscle-invasive carcinoma (≤pT1 + N0). TRG1, TRG2 and TRG3 were found in 32%, 15% and 50% of patients, respectively. Histological variants of UC were reported in 25% of cases. The most common therapy-related stromal change was fibroblastic reaction (78%), and the most common epithelial change in residual UC was smudgy and poorly preserved chromatin (28%). Prominent stromal and epithelial changes were noted in 41% and 5% of RCs, respectively. Progression was found in 45% of patients, and cancer-related deaths occurred in 30%. Multivariate analysis showed that the only independent prognostic parameters for progression were T stage, N stage, lymphovascular invasion, and margin status. Similarly, only T stage, N stage and margin statu...Continue Reading

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Citations

Sep 17, 2019·The American Journal of Surgical Pathology·Charlotte S VoskuilenRoland Seiler
Nov 17, 2020·Frontiers in Genetics·Xin Pan, Xiaoxin Ma

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