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A 44-year-old female presents with complaints of intermittent purulent nasal discharge and a decreased sense of smell over the past 6 months. She has received antibiotic therapy several times along with steroid nasal spray and nasal irrigations during this period. She has limited improvement with these therapies. Moreover, the patient complains of left frontal headache in the past 2 weeks. She denies forehead swelling, eye swelling, or fever.
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