Primary Extranodal Natural Killer/T-Cell Lymphoma of the Central Nervous System: A Rare Case Report with Diagnostic and Management Challenges. - Dahiya, Surbhi; Langer, Sabina; Saraf, Amrita; Arya, Vandana; Ranjan, Rajeev; Kotwal, Jyoti (Turkish Journal of Hematology, 2026)