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A Lightweight Multi-Cancer Tumor Localization Framework for Deployable Digital Pathology

arXiv cs.AI / 3/11/2026

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Key Points

  • The paper presents MuCTaL, a lightweight multi-cancer tumor localization framework trained on hematoxylin and eosin-stained whole-slide images from four different cancer types.
  • MuCTaL employs transfer learning with DenseNet169 and achieves high tile-level ROC-AUC performance of 0.97 on validation data across the four training cancers.
  • The model generalizes reasonably well to unseen tumor types, demonstrated by achieving 0.71 ROC-AUC on an independent pancreatic ductal adenocarcinoma dataset.
  • A scalable inference workflow was developed to produce spatial tumor probability heatmaps that integrate seamlessly with existing digital pathology tools.
  • The code and trained models are publicly available, facilitating deployment and further research in digital pathology applications.

Computer Science > Computer Vision and Pattern Recognition

arXiv:2603.08844 (cs)
[Submitted on 9 Mar 2026]

Title:A Lightweight Multi-Cancer Tumor Localization Framework for Deployable Digital Pathology

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Abstract:Accurate localization of tumor regions from hematoxylin and eosin-stained whole-slide images is fundamental for translational research including spatial analysis, molecular profiling, and tissue architecture investigation. However, deep learning-based tumor detection trained within specific cancers may exhibit reduced robustness when applied across different tumor types. We investigated whether balanced training across cancers at modest scale can achieve high performance and generalize to unseen tumor types. A multi-cancer tumor localization model (MuCTaL) was trained on 79,984 non-overlapping tiles from four cancers (melanoma, hepatocellular carcinoma, colorectal cancer, and non-small cell lung cancer) using transfer learning with DenseNet169. The model achieved a tile-level ROC-AUC of 0.97 in validation data from the four training cancers, and 0.71 on an independent pancreatic ductal adenocarcinoma cohort. A scalable inference workflow was built to generate spatial tumor probability heatmaps compatible with existing digital pathology tools. Code and models are publicly available at this https URL.
Comments:
Subjects: Computer Vision and Pattern Recognition (cs.CV); Artificial Intelligence (cs.AI)
Cite as: arXiv:2603.08844 [cs.CV]
  (or arXiv:2603.08844v1 [cs.CV] for this version)
  https://doi.org/10.48550/arXiv.2603.08844
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arXiv-issued DOI via DataCite

Submission history

From: Riyue Bao [view email]
[v1] Mon, 9 Mar 2026 19:00:04 UTC (1,048 KB)
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