Primary localized amyloidosis of the nose and paranasal sinuses. A case report with immunohistochemical observations and a review of the literature.

Primary localized amyloidosis of the nose and nasopharynx is a rare disease. We present a case and review seven additional cases from the English literature. The ages of the patients ranged from 8 to 86 years; there was no sex predominance. Symptoms were nasal obstruction, epistaxis, and impaired hearing. Physical examination revealed a nasal mass or glue ears. The lesions were composed of amyloid and chronic inflammatory cells, mainly plasma cells. Ours is the first case of nasal amyloidosis in which the type of amyloid was determined immunohistochemically to be amyloid light chain (AL) lambda. The main treatment was surgical. Recurrences developed. Determination of the biochemical nature of this amyloid clarified its pathogenesis and may influence treatment. Amyloidosis should be considered in the differential diagnosis of nasal obstruction, epistaxis, and glue ears, even in the pediatric age group.