Diagnosis: Non-Hodgkin lymphoma (NHL) (diffuse large B-cell type) of the frontal sinus
Lymphoma represents 3% to 5% of all malignant neoplasms, with NHL making up 60% of these cases. Primary NHL arising in the head and neck region accounts for 10% of all NHL cases. Primary extranodal lymphoma in the head and neck region presents in the nasal cavities, paranasal sinuses, and thyroid or salivary glands. Sites of involvement outside of the head and neck include the gastrointestinal tract, skin, and testis.1
Radiology Quiz Case 1: Diagnosis. Arch Otolaryngol Head Neck Surg. 2012;138(5):516–517. doi:10.1001/archoto.2012.273b
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