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ArticleEuropean radiology2026

Enhanced recurrence risk stratification for stages Ⅱ-Ⅲ breast cancer using MRI-based structure habitat imaging.

Guangsong Wang, Dafa Shi, Qiu Guo, Rui Wang, Zhongruowen Ren, Mingyuan Dai, Hongying Huang, Wenbin Luo, Gen Yan, Ke Ren

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Article in European radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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10 authors.

Guangsong Wang *Department of Radiology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
Dafa Shi *Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China.
Qiu GuoDepartment of Radiology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
Rui WangDepartment of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China.
Zhongruowen RenDepartment of Radiology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
Mingyuan DaiKey Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China.
Hongying HuangDepartment of Radiology, Second Affiliated Hospital of Shantou University Medical College, Shantou, China.
Wenbin LuoDepartment of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China.
Gen YanDepartment of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China. gyan@stu.edu.cn.
Ke RenDepartment of Radiology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China. renke816@163.com.ORCID http://orcid.org/0009-0005-8247-0827

Funding

National Natural Science Foundation of China 82071886The Scientific Research Foundation for Advanced Talents of Xiang'an Hospital of Xiamen University no. PM201809170011
6 · The paper itself

Abstract

purposeTo identify robust tumor habitat subregions using pre-treatment MRI and assess the prognostic value of the resulting phenotypes for recurrence risk stratification in stages II-III breast cancer.

methodsThis multicenter retrospective study included 842 women with stages II-III breast cancer who received pre-treatment MRI scans and subsequent surgical resection from three centers (multicenter discovery cohort: n = 415; external test cohort: n = 427). An unsupervised clustering-based habitat characterization framework was applied to delineate tumor subregions and identify distinct structure habitat phenotypes (SH-phenotypes). Recurrence-free survival (RFS) was evaluated using Kaplan-Meier analysis and multivariate Cox regression. Fine-Gray competing risk regression was additionally used to account for death as a competing event.

resultsTwo structural subregions (central and peripheral) with unique radiomic patterns and three SH-phenotypes with distinct RFS were identified in the discovery cohort and validated in the test cohort (log-rank p < 0.001 for both). The SH-phenotypes remained independent prognostic predictors after adjustment for tumor size, nodal involvement, clinical subtype, pathological grade, and patient age [test cohort: SH-phenotype 2 vs 1, hazard ratio (HR) = 2.29, p = 0.048; SH-phenotype 3 vs 1, HR = 3.45, p = 0.006]. Similar results were obtained in the competing risk regression analysis.

conclusionsTwo structural habitat subregions were identified, and the derived SH-phenotypes provide additional prognostic value beyond clinicopathological factors for recurrence risk stratification in stages II-III breast cancer. KEY POINTS: Question Precise evaluation of recurrence risk is crucial for tailoring therapy for stages II-III breast cancer, but it remains challenging with classical clinicopathological factors. Findings Pre-treatment MRI-based SH analysis identified three phenotypes with distinct RFS and recurrence cumulative incidence, independent of clinicopathological factors. Clinical relevance The clinical utility of this phenotyping lies in its role as an adjunct to classical clinicopathological factors, enhancing recurrence risk stratification for optimized treatment planning in stages II-III breast cancer.

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Breast cancerMagnetic resonance imagingRadiomicsRecurrence

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