Integrating Deep Residual Learning and Thematic Analysis in a Hybrid Framework for Precision Oncology: Advancing Cancer Diagnosis and Personalized Treatment

Abstract

This study presents a novel hybrid framework that integrates deep residual learning with thematic analysis to enhance diagnostic accuracy and treatment personalization in oncology. By combining quantitative imaging features extracted via ResNet-50 with qualitative thematic embeddings derived from unstructured electronic health record (EHR) narratives, the system models both morphological tumor characteristics and patient-centered contextual factors. The framework was evaluated in a controlled simulation environment using synthetic multimodal datasets for breast and lung cancer. Results demonstrated that the hybrid approach significantly outperformed conventional image-only models. The late fusion model achieved an accuracy of 93.1%, F1-score of 91.3%, and an AUC of 0.96, compared to 87.4%, 84.9%, and 0.91, respectively, for the image-only baseline. Error rates were reduced by 45.2%, and thematic embeddings influenced classification decisions in 21% of cases—78% of which led to improved diagnostic correctness. Furthermore, the model exhibited strong calibration, with predicted probabilities aligning within ±3% of actual outcomes across all confidence bins. Attention-based mechanisms enabled dynamic prioritization of modalities, emphasizing thematic content in over 60% of clinically ambiguous scenarios. These findings provide compelling evidence for the integration of deep learning and thematic analysis in precision oncology. The hybrid framework not only improves predictive performance but also brings artificial intelligence systems closer to the interpretive and patient-centered standards of real-world clinical practice.