抄録
Pseudotumor is a term used to describe a space-occupying inflammatory lesion which mimics a true neoplastic process in its clinical presentation. We report a case of plasma cell granuloma of the right maxillary sinus that presented with swelling of the cheek. It is difficult to differentiate this rare lesion from a malignant tumor by imaging procedures. We diagnosed plasma cell granuloma postoperatively. Histological examination showed infiltration of plasma cells in the fibrous stroma. In these plasma cells there were no atypical features.