Multimodal Fusion of Histopathology Images and Electronic Health Records for Early Breast Cancer Diagnosis

• URL: http://arxiv.org/abs/2604.17122v1
• Date: Sat, 18 Apr 2026 19:46:34 GMT
• Title: Multimodal Fusion of Histopathology Images and Electronic Health Records for Early Breast Cancer Diagnosis
• Abstract summary: This paper presents a systematic framework that integrates patch-level histopathology features with structured clinical data.<n>We train and evaluate unimodal image models (a simple CNN baseline and ResNet-18 with transfer learning) and intermediate-fusion models (XGBoost and a multilayer perceptron)<n>Our results demonstrate that multimodal integration delivers meaningful improvements in both predictive performance and clinical transparency.
• Score: 15.70912899013153
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Breast cancer is a leading cause of cancer-related mortality worldwide, and timely accurate diagnosis is critical to improving survival outcomes. While convolutional neural networks (CNNs) have demonstrated strong performance on histopathology image classification, and machine learning models on structured electronic health records (EHR) have shown utility for clinical risk stratification, most existing work treats these modalities in isolation. This paper presents a systematic multimodal framework that integrates patch-level histopathology features from the BreCaHAD dataset with structured clinical data from MIMIC-IV. We train and evaluate unimodal image models (a simple CNN baseline and ResNet-18 with transfer learning), unimodal tabular models (XGBoost and a multilayer perceptron), and an intermediate-fusion model that concatenates latent representations from both modalities. ResNet-18 achieves near-perfect accuracy (1.000) and AUC (1.000) on three-class patch-level classification, while XGBoost achieves 98% accuracy on the EHR prediction task. The intermediate fusion model yields a macro-average AUC of 0.997, outperforming all unimodal baselines and delivering the largest improvements on the diagnostically critical but class-imbalanced mitosis category (AUC 0.994). Grad-CAM and SHAP interpretability analyses validate that model decisions align with established pathological and clinical criteria. Our results demonstrate that multimodal integration delivers meaningful improvements in both predictive performance and clinical transparency.

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