An Isolated Mesenteric Presentation of a Nodal Peripheral T Cell Lymphoma with T Follicular Helper Cell Phenotype oleh Anna Keogh, Fiona Lynott, Antonios Papanicolau-Sengos, Mutaz Mohammed Nur, Aisling Spillane, Fiona Quinn, Ezzat ElHassadi, Elaine S. Jaffe, Richard Flavin