What question did this study set out to answer?

This evaluation aims to compare the accuracy of MRI staging with pathological outcomes in rectal cancer without neoadjuvant therapy.

Accuracy of magnetic resonance imaging staging versus pathological staging in rectal cancer: insights from patients managed without neoadjuvant therapy

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Retrospective service evaluation compares MRI and pathology staging in rectal cancer, suggesting caution in interpretation.

This evaluation aims to compare the accuracy of MRI staging with pathological outcomes in rectal cancer without neoadjuvant therapy.
Single-centre retrospective service evaluation of patients with rectal adenocarcinoma managed without neoadjuvant therapy
Comparison of preoperative MRI staging (T stage, nodal status, EMVI) to postoperative histopathology
Analysis of concordance, overstaging, understaging, and diagnostic performance metrics.
MRI accurately staged T category in 62% and nodal status in 55% of cases.
For ≥T3 disease, MRI sensitivity was 64.3% (95% CI 38.8–83.7) and specificity 76.9% (95% CI 49.7–91.8).
Nodal staging sensitivity was poor at 18.2% (95% CI 5.1–47.7), and overall accuracy was 55.2% (95% CI 37.5–71.6).

Filipe L.F. Carvalho (2026) studied this question.

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