Also known as: NK/T-Cell Lymphoma, Nasal and Nasal-Type / Extramedullary NK-T-cell Lymphoma, Nasal Type / Extranodal NK-T-Cell Lymphoma, Nasal and Nasal-Type / Extranodal Natural Killer/T-Cell Lymphoma, Nasal Type / Nasal and Nasal-type NK/T-cell Lymphoma / Natural Killer/T-Cell Lymphoma, Nasal and Nasal-Type / Angiocentric lymphoma NOS / Angiocentric lymphoma / Extranodal natural killer/T-cell lymphoma, nasal type (disorder) / Angiocentric lymphomas / Mature T/NK-cell lymphomas, unspecified / NK/T-cell lymphoma, nasal and nasal-type (morphologic abnormality)