Laura Pasqualucci, MD, of Columbia University, New York, NY, is joined by Robert Kridel, MD, MPH, PhD, of Princess Margaret Cancer Center, Toronto, ON, Nathan Fowler, MD, University of Texas MD Anderson Cancer Center, Houston, TX, in a roundtable discussion on the tumor microenvironment in lymphoma at the 17th International Workshop on Non-Hodgkin Lymphoma held in Boston, MA.