Immunophenotypic and Clinical Differences Between the Nasal and Extranasal Subtypes of Upper Aerodigestive Tract Natural Killer/T-Cell Lymphoma

Patients with nasal and extranasal UADT-NKTCL have significantly different clinical features, immunophenotypes, and prognosis. Extranasal UADT-NKTCL should be considered as a distinct subgroup apart from the most commonly diagnosed prototype of nasal UADT-NKTCL.