[Laryngotracheal NK/T lymphoma: clinical case].

NK/T-cell lymphoma is a rare condition with an aggressive course and poor prognosis. Historically known as «lethal midline granuloma», it generally appears in a midfacial location. We describe the case of a 22-year-old Colombian woman with laryngotracheal affectation, presenting with hoarseness and hemoptysis. CT scan and MRI showed severe laryngeal and tracheal destruction. The biopsy showed a polymorphic, lymphoid cell infiltrate with angiocentric and angiodestructive pattern. The immunohistochemical study confirmed the immunophenotype of the NK/T-cells: CD2+, CD56+ and cytoplasmic CD3+. The in situ hybridization and flow cytometry findings were: EBER+, TIA-1+ and perforin+. The patient died from complications of her disease, before undergoing oncologic treatment.