Efficacy and safety of cytoreductive nephrectomy combined with thrombectomy in metastatic renal cell carcinoma with venous tumor thrombus: a real-world study based on inverse probability of treatment weighting.

Authors

Changwei Shi, Cheng Peng, Jialong Song, Qilong Jiao, Yibo Chen, Zhenze Yang, Deqiang Lv, Xu Zhang, Liangyou Gu, Xin Ma, Qingbo Huang

Published in

World journal of urology. Volume 44. Issue 1. Jul 19, 2026. Epub Jul 19, 2026.

Abstract

Cytoreductive nephrectomy (CN) combined with thrombectomy remains controversial for metastatic renal cell carcinoma with venous tumor thrombus (mRCC-VTT), and optimal patient selection remains undefined.
We retrospectively analyzed 238 patients with RCC-VTT treated at a single center between February 2006 and December 2023. Patients were stratified as non-metastatic surgical (nmRCC-VTT-S, n = 135), metastatic surgical (mRCC-VTT-S, n = 53), or metastatic non-surgical (mRCC-VTT-NS, n = 50). Inverse probability of treatment weighting (IPTW) was used to reduce measured confounding. Perioperative outcomes, OS, PFS, subgroup heterogeneity, and 3-month landmark sensitivity analyses were evaluated.
After IPTW adjustment, perioperative outcomes were comparable between metastatic and non-metastatic surgical cohorts (all P > 0.05). In the metastatic cohort, surgery was associated with longer OS than non-surgical management (P = 0.027), and this association remained significant in the 3-month landmark analysis after re-estimating IPTW (P = 0.018). PFS showed no significant difference after primary IPTW adjustment (P = 0.517) and showed only a non-significant favorable trend after landmark IPTW adjustment (P = 0.064). Mayo level modified the association between surgery and OS (P for interaction < 0.001) and PFS (P for interaction = 0.034). For OS, surgery was associated with longer survival in Mayo 0-II thrombi (HR 0.56, P = 0.045), whereas patients with Mayo III-IV thrombi had worse outcomes after surgery (HR 6.22, P = 0.016).
CN combined with thrombectomy appeared feasible and was associated with improved OS in selected patients with mRCC-VTT, particularly those with low-level thrombi. Mayo level should inform surgical decision-making, and systemic therapy-first strategies should be considered for high-level thrombi.

PMID:
42472396
Bibliographic data and abstract were imported from PubMed on 19 Jul 2026.

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