Extranodal Rosai-Dorfman Disease Presenting as a Pericardial Mass and Constrictive Pericarditis oleh Chirag K. Desai, MD, Sharonne N. Hayes, MD, Mithun Vinod Shah, MD, PhD, Joseph J. Maleszewski, MD, Jonathan Bleeker, MD, Kelly Steffen, DO, Maria Stys, MD