The Utility of Preoperative MRI in Unilateral Sinus Disease

In addition to sinusitis, other causes of unilateral sinus disease include odontogenic maxillary sinusitis, mycosis, and tumors. In many cases, it is difficult to distinguish among these causes by sinus CT alone, which is widely used for preoperative diagnosis in patients undergoing endoscopic sinus surgery (ESS), and the usefulness of MRI to improve the accuracy of diagnosis has been reported. To improve the accuracy of preoperative diagnosis, we investigated the disease distribution, patient backgrounds, and preoperative positive diagnosis rate in patients who underwent unilateral ESS.