As the great imitator, IgG4-RD can closely mimic any number of diseases throughout the body, necessitating a multidisciplinary approach to diagnosing and managing the disease. However, unlike many of its mimics, IgG4-RD can be effectively treated, if diagnosed early. Led by Dr. John Stone (Program Chair, rheumatologist), this case-based panel discussion offers a unique, interactive experience to deepen your understanding of IgG4-RD. Together with a distinguished multidisciplinary faculty team – Drs. Avinash Kambadakone (radiologist), Matthias Löhr (gastroenterologist), and Yoh Zen (pathologist) – the session will delve into complex cases, presenting them in a step-by-step manner. Through collaborative analysis and discussions, this panel promises to provide valuable insights into the nuances of diagnosing and managing IgG4-RD.