Chronic Sinusitis as a Manifestation of Primary Immunodeficiency in Adults

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Abstract
Twenty-three adult patients evaluated at a university medical center for severe refractory sinusitis were found to have a primary immunodeficiency on the basis of total immunoglobulin, IgG subclass, and vaccine response determinations. The most common finding was IgG3 deficiency with antibody hyporesponsiveness to pneumococcal vaccine. Treatment options included prophylactic antibiotics and aggressive management of associated allergies with intravenous immunoglobulin reserved for severely affected patients who failed more conservative therapy.