ArticleFrontiers in oncology2021
Comparison of Long-Term Survival Outcomes of T4a and T4b Colorectal Cancer.
Article in Frontiers in oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- T4bN0 colon cancer shows worse survival than T1-2N1 disease: a multicenter real-world study in China.Translational cancer research · 2026Article
- Clinical outcomes of neobladder or augmentation after cystectomy in locally advanced colorectal cancer involving urinary tract: case series.BMC urology · 2025Article
- Outcomes of neoadjuvant chemoradiotherapy in T4 rectal cancer patients: a real-world single institution experience.Radiation oncology journal · 2024Article
- Outcome of Patients with Locally Advanced Rectal Cancer Pursuing Non-Surgical Strategy in National Cancer Database.Cancers · 2024Article
- Personalizing adjuvant therapy for patients with colorectal cancer.Nature reviews. Clinical oncology · 2024Review
- A predictive model for early death in elderly colorectal cancer patients: a population-based study.Frontiers in oncology · 2023Article
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8 authors.
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Abstract
backgroundAlthough T4b is known to have worse oncologic outcomes, it is unclear whether it truly shows a worse prognosis. This study aims to compare the survival differences between T4a and T4b.
methodsPatients who were pathologically diagnosed with T3 and T4 colorectal adenocarcinoma from 2010 to 2014 were included (T3, n = 1822; T4a, n = 424; T4b, n = 67). Overall survival (OS) and cancer-specific survival (CSS) were compared between T4a and T4b using the Kaplan-Meier method and log-rank test.
resultsIn stage II, T4a had better OS and CSS than T4b (5-year OS, 89.5% vs. 72.6%; 5-year CSS, 94.4% vs. 81.7%, all p < 0.05), however, in stage III, there were no significant differences in survivals between groups (all p > 0.05). In multivariable analysis, T classification was not an independent risk factor for OS (p > 0.05). However, for CSS, when respectively compared to T3, T4b (HR 3.53, p < 0.001) showed a relatively higher hazard ratio than T4a (HR 2.27, p < 0.001).
conclusionsT4a showed more favorable OS and CSS than T4b, especially in stage II. Our findings support the current AJCC guidelines, in which T4b is presented as a more advanced stage than T4a.
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