mlsanityData to 7 Oct 2026

Efficient Self-Supervised Grading of Prostate Cancer Pathology

arXiv 2501.15520 ↗First posted 26 Jan 2025cs.CVcited by 1

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Abstract (arXiv)

Prostate cancer grading using the ISUP system (International Society of Urological Pathology) for treatment decisions is highly subjective and requires considerable expertise. Despite advances in computer-aided diagnosis systems, few have handled efficient ISUP grading on Whole Slide Images (WSIs) of prostate biopsies based only on slide-level labels. Some of the general challenges include managing gigapixel WSIs, obtaining patch-level annotations, and dealing with stain variability across centers. One of the main task-specific challenges faced by deep learning in ISUP grading, is the learning of patch-level features of Gleason patterns (GPs) based only on their slide labels. In this scenario, an efficient framework for ISUP grading is developed. The proposed TSOR is based on a novel Task-specific Self-supervised learning (SSL) model, which is fine-tuned using Ordinal Regression. Since the diversity of training samples plays a crucial role in SSL, a patch-level dataset is created to be relatively balanced w.r.t. the Gleason grades (GGs). This balanced dataset is used for pre-training, so that the model can effectively learn stain-agnostic features of the GP for better generalization. In medical image grading, it is desirable that misclassifications be as close as possible to the actual grade. From this perspective, the model is then fine-tuned for the task of ISUP grading using an ordinal regression-based approach. Experimental results on the most extensive multicenter prostate biopsies dataset (PANDA challenge), as well as the SICAP dataset, demonstrate the effectiveness of this novel framework compared to state-of-the-art methods.

Key facts. Cited by 1 paper in the map (data through 7 Oct 2026). Builds on 21 of its 53 references that are in the map. First posted on arXiv 26 Jan 2025.

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21 of 53 references.

References · 21

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9 more
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Citing papers per year: 2025: 1.

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  1. 2025Graph Laplacian Transformer with Progressive Sampling for Prostate Cancer Gradingcited by 0