title: [A case of natural killer T-cell lymphoma in the nasal cavity].
abstract: CD56 positive natural killer T cell lymphoma is characterized by destructive lesions in the nasal cavity and nasopharynx. Severe tissue necrosis makes histopathologic diagnosis difficult, generally necessitating multiple biopsies. A thirty-three-year-old male patient presented with complaints of nasal obstruction, hemorrhagic discharge of fetid odor, and rhinolalia. Immunohistochemical studies on biopsy specimens obtained from the lesion in the nasal septum and posterior nasal cavity revealed CD56 positive natural killer T cell lymphoma. The patient was treated with eight courses of combination chemotherapy, since then he has been in remission for more than 1.5 years.
authors.affiliation: Department of Otolaryngology, Medicine Faculty of Kocaeli University, 41100 Derince, Izmit, Turkey.
authors.forename: Atilla
authors.initials: A
authors.lastname: Sengör
authors.forename: Haluk
authors.initials: H
authors.lastname: Ozkarakaş
authors.forename: Cengiz
authors.initials: C
authors.lastname: Erçin
authors.forename: Ilknur
authors.initials: I
authors.lastname: Memişoğlu
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D016399:Lymphoma, T-Cell / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology; D008297:Male; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology; D011859:Radiography