A Rare Presentation of IgG4-Related Sinusitis With Chronic Nasal Obstruction and Headache: A Case Report and Literature Review
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IgG4-related disease (IgG4-RD) is a systemic inflammatory condition characterized by tissue infiltration with IgG4-positive plasma cells and a tendency to form mass-like lesions in various organs. IgG4-related sinusitis, although a relatively rare manifestatio... ...