Distilling Knowledge in Gastroenterology: An Artificial Intelligence System for Assisting Colonoscopy and Pathology...

To develop an efficient and domain-adapted system to process colonoscopy and pathology reports using knowledge distillation techniques.

We implemented a knowledge distillation framework to create a smaller, domain-specific large language models-based natural language processing model for summarizing and extracting key information from clinical reports. The model was trained on a dataset consisting of 5500 colonoscopy reports and 7000 pathology reports taken from January 1, 2024, to June 30, 2024. Performance was evaluated against ground truth polyp categories derived from pathology report diagnoses.

The distilled model reported high domain-specific performance, achieving 95.2% accuracy (95% CI, 93.9%-96.5%), 0.95 precision, and a 31.5% improvement in inference speed relative to the teacher model. Despite being substantially smaller than the teacher model, it maintained strong capability in polyp category identification from key clinical factors, including polyp number, size, histology, and location across colonoscopy and pathology reports. Domain clinicians reported high agreement with model outputs across all 6 evaluated clinical questions, confirming its reliability for supporting follow-up recommendation workflows.

This work presents a step toward making domain-specific natural language processing models for gastroenterology more efficient and scalable. By leveraging knowledge distillation, we report the potential for creating more practical domain-specific models that can assist in interpreting complex clinical documentation. Future work will focus on real-world validation and expanding the model to other procedural report types.