This document summarizes a Lean journey in an endoscopy unit over two years that resulted in significant financial and quality improvements. Key points: 1) Applying Lean principles like eliminating waste and improving workflow led to a $3 million annual revenue increase from 250-700 more procedures per month with the same resources. 2) Additional savings beyond the procedure room brought the total return on investment to over $3 million annually. 3) Implementing tools like visual workplace organization, Just-in-Time supply management, rapid improvement events, and a focus on continuous improvement helped empower staff and establish a culture of problem-solving that sustained improvements.