A Case of Nasal Extranodal NK/T Cell Lymphoma Misdiagnosed as Reccurent Periorbital Cellulitis or Acute Dacryocystitis

Nasal extranodal natural killer/T cell (NK/T cell) lymphoma is more common in East Asia than in the United States, comprising up to 7-10% of all non-Hodgkin's lymphoma. Early nasal symptoms are nonspecific and similar to chronic rhinosinusitis, such as nasal obstruction and nasal bleeding. With disease progression, inflammation and necrosis of the mucosa increase, hindering pathologic diagnosis. We experienced a case of nasal extranodal NK/T cell lymphoma in a 58-year-old woman who presented with recurrent periorbital swelling.