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Received March 6, 2020 Revised May 23, 2020 Accepted May 26, 2020 Address for correspondence Young-Jun Chung, MD Department of OtorhinolaryngologyHead and Neck Surgery, Dankook University College of Medicine, 201 Manghyang-ro, Dongnam-gu, Cheonan 31116, Korea Tel +82-41-550-3974 Fax +82-41-556-1090 E-mail entdocjung@daum.net Background and Objectives Fungus ball is the most common type of fungal sinusitis commonly associated with good prognosis. However, postoperative results depending on the extent of the lesion has not been investigated. This study aimed to identify differences in postoperative results depending on the location and extent of the fungus ball. Subjects and Method Medical records of 165 patients who underwent endoscopic sinus surgery and who were diagnosed with fungus balls by biopsy from 2010 to 2019 were retrospectively reviewed. Patients were classified into four grades according to the location and extent of the fungus ball based on their endoscopic and CT findings. Poor outcome is defined as any pathologic signs such as nasal secretion, granulation, and polyps or narrowing of the natural ostium observed postoperatively according to Kennedy’s criteria, whereas good outcome is defined as absence of pathologic signs. Results A total of 23 patients were Grade 1, 38 Grade 2, 67 Grade 3, and 37 Grade 4. Grades 1 and 2 were mostly asymptomatic. However, as the location of the fungus ball became closer to the natural ostium, patients complained postnasal drip and purulent discharge. Grades 3 and 4, who have much severe and more extensive lesions than those of Grades 1 and 2, had poor outcome (p=0.007) and took longer time to completely recover (p<0.001). Conclusion Wound healing was delayed and poor when the fungus ball was located closer to the natural ostium of the maxillary sinus. Therefore, preoperative consultation using endoscopic and CT findings could be useful for predicting their postoperative results. Korean J Otorhinolaryngol-Head Neck Surg 2021;64(1):13-8

Comparison of Postoperative Results According to Fungus Ball Extension in Maxillary Sinus