Evidence mapPaperPMID 41947259Full record

ArticleCancer imaging : the official publication of the International Cancer Imaging Society2026

Temporal change in skeletal muscle index as a predictor of recurrence for patients with locally advanced colorectal malignancy: a retrospective cohort study.

Noah B Manz, Jordan Reed, Christopher D Kanner, Jeremy A Dressler

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Article in Cancer imaging : the official publication of the International Cancer Imaging Society, 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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4 authors.

Noah B ManzRobert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA. noah.manz@med.uvm.edu.
Jordan ReedDepartment of Radiology, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA.
Christopher D KannerDepartment of Radiology, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA.
Jeremy A DresslerDepartment of Surgery, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundColorectal cancer remains a leading cause of cancer-related morbidity and mortality with stage III disease carrying a substantial risk of recurrence despite curative resection. Accurate risk stratification is essential to optimize surveillance and guide adjuvant therapy. Traditional risk models rely heavily on pathologic features, but recent studies suggest that body composition metrics, particularly imaging-based assessments of skeletal muscle mass, may offer additional prognostic value. The skeletal muscle index (SMI), derived from routine CT imaging, has emerged as a promising surrogate marker of frailty. However, the relationship between temporal changes in SMI and cancer recurrence remains poorly understood.

methodsA retrospective cohort study was performed using single-institution data from over 500 patients who underwent resection for stage III colorectal malignancy. SMI at diagnosis (SMI

resultsA decrease in SMI was independently associated with increased risk of disease recurrence with an odds ratio of 2.23 per 10% decline (95% CI: 1.15-4.35, p = 0.018). Baseline muscle status was not associated with recurrence (OR 1.01 per cm

conclusionsPostoperative decline in skeletal muscle index is a significant, independent predictor of colorectal cancer recurrence. Clinically relevant risk stratification thresholds have been proposed and support the conclusion that longitudinal monitoring of SMI may have value to escalate surveillance intensity rather than being a passive prognostic marker. Future studies should focus on validating these thresholds in large, multi-center cohorts.

Indexed as

Colorectal NeoplasmsMuscle, SkeletalNeoplasm Recurrence, LocalAgedFemaleHumansMaleMiddle AgedNeoplasm StagingPrognosisRetrospective StudiesTomography, X-Ray ComputedColorectal cancer recurrenceMyopeniaPropensity score matchingSkeletal muscle index

Identifiers

PMID41947259
PMCPMC13154471

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