Evidence map›Paper›PMID 42174531›Full record

ArticleBMC cancer2026

Radiological staging clinical decision support model for rectal cancer lymph node metastasis detection on MRI.

Benjamin Keel, Aaron Quyn, David Jayne, Samuel D Relton

Abstract read
In one paragraph

Article in BMC cancer, 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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0citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Benjamin KeelUniversity of Leeds, Leeds, UK. mm17b2k@leeds.ac.uk.
Aaron QuynUniversity of Leeds, Leeds, UK.
David JayneUniversity of Leeds, Leeds, UK.
Samuel D ReltonUniversity of Leeds, Leeds, UK.

Funding

Engineering and Physical Sciences Research Council EP/S024336/1Leeds Biomedical Research Centre NIHR203331
6 · The paper itself

Abstract

backgroundAccurate staging of lymph node metastasis (LNM) is crucial for personalising rectal cancer treatment. Lymph nodes (LNs) are the most common sites of rectal cancer metastasis, and malignant LNs are typically treated with neo-adjuvant radiotherapy or chemoradiotherapy (CRT) to reduce the chance of recurrence and distant metastasis after surgery. Radiological staging criteria, based on LN size, shape, and texture, are known to be subjective, and radiologists have an average diagnostic performance of 73% sensitivity and 74% specificity.

methodsThis study develops a fully automatic and end-to-end pre-operative radiological staging model for rectal cancer LNM using artificial intelligence (AI) methods. The model combines automatic detection of lymph nodes on Magnetic Resonance Imaging (MRI) with multiple instance learning patient-level lymph node staging. Models were trained and evaluated on an in-house dataset provided by Leeds Teaching Hospitals NHS Trust (LTHT) including 458 patients with pre-operative MRI scans, patient clinical data, and post-operative pathological TNM staging. Accurate detection of the lymph nodes on MRI is achieved using nnU-Net, and the classification results compare different 3D feature encoders, investigating a trade-off between performance and interpretability.

resultsThe results demonstrate state-of-the-art performance with cross-validated metrics of 0.828 AUC, 86.6% sensitivity, and 72.4% specificity. Clinical validation study results show that the AI staging model performance exceeded three expert radiologists in predicting post-operative pathology with a 9% higher F1 score.

conclusionsThis study provides strong evidence that an end-to-end AI model can significantly improve pre-operative staging of rectal cancer lymph node metastasis. The model outperformed expert radiologists and shows clear potential to enhance clinical decision making and improve patient outcomes.

Indexed as

Lymphatic MetastasisLymph NodesMagnetic Resonance ImagingRectal NeoplasmsArtificial IntelligenceFemaleHumansMaleMultiple-Instance Learning AlgorithmsNeoplasm StagingDeep learningLymph node metastasisMRIMultiple instance learningRectal cancerVariational autoencoder

Identifiers

PMID42174531
PMCPMC13349071

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.