Primary extranodal Natural Killer/ T-cell lymphoma of the ethmoid sinus masquerading as orbital cellulitis

This report presents a case of an exceptionallyrare primary Natural Killer/T cell (NK/T) lymphomaof the right paranasal frontal and ethmoidsinuses in a patient treated previously for rightside chronic sinusitis. It highlighted the importanceof adequate tissue biopsy and patohistologicalexamination in patients with chronic sinusitisor orbital cellulitis that fail to respond totraditional management.