Engaging Multidisciplinary Teams to Develop Pragmatic Clinical Practice Guidelines to Support Management of Patients With High-Risk Breast Lesions.

Introduction: We sought to develop clinical guidelines within our multidisciplinary Breast Center to support decision-making for managing high-risk breast lesions. The objective is to describe the process used to develop these guidelines and assess perceived acceptability.

Methods: We recruited clinical stakeholders to identify key "high-risk" topics. Stakeholder groups (surgery, radiology, pathology) met separately to review the topics, leveraging existing literature reviews and best available evidence. Guidelines were initially developed in 2015 and updated in 2019. We surveyed breast clinical team members in 2023 regarding the perceived acceptability of the guidelines and summarized the data.

Results: We created clinical guidelines to address the management of atypical ductal hyperplasia, flat epithelial atypia, atypical lobular hyperplasia/lobular carcinoma in situ, radial scar/complex sclerosing lesion, and papillomas. Key guideline components included process for radiologic-pathologic correlation, patient disposition after biopsy (surgical referral needed, follow-up imaging recommended), recommendation for the role of surgical excision, and recommendation regarding imaging follow-up if excision not performed. Forty clinical team members (66% [40/60] response rate) completed the acceptability survey from varied disciplines. Most (78%) were aware of the guidelines. Respondents rated the recommendations for disposition after biopsy, surgical management, and follow-up imaging as the most helpful components. Most (> 80%) rated them to be very/extremely useful.

Conclusion: We leveraged input from key stakeholders to develop clinical guidelines to support the multidisciplinary management of patients with high-risk breast lesions. Our guidelines have been successfully implemented across our academic and community practice. Future steps will assess the impact of implementation on clinical outcomes.