Abstract
Background and Objectives: The purpose of this study was to classify radiological findings of patients diagnosed with maxillary sinus fungus ball and to analyze the differences in surgical approach methods and postoperative results.Methods: As a retrospective study, we reviewed the medical records of 221 patients (unilateral in 216: bilateral in 5).Results: On computed tomography (CT), 49% of the lesions had an irregular surface or a protruding part. There was a significant difference in surgical approach according to pneumatization of the maxillary sinus when middle meatal antrostomy (MMA) was performed alone or combined with MMA and inferior meatal antrostomy (IMA) (p=0.042). Extension of a maxillary sinus lesion caused by fungus ball was not associated with stenosis of the MMA (p=0.328).Conclusion: Diagnosis of maxillary sinus fungus on CT was associated with irregular lesion surface or a protruding calcification. In patients with fungus ball of the maxillary sinus, the more severe is the maxillary sinus pneumatization, the larger is the extent of IMA needed.
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