Pericardial Effusion during Proton Therapy in a Patient with Chemorefractory Hodgkin Lymphoma oleh Ashley Way, MD, Savas Ozdemir, MD, Barbara Berges, RN, Nataliya Getman, MS, Xiaoying Liang, PhD, Nancy P. Mendenhall, MD, Graham Collins, MA, MBBS, MRCP, FRCPath, DPhil, David Cutter, MRCP, FRCR, DPhil, Raymond B. Mailhot Vega, MD, MPH