목적: Patulous eustachian tube (PET) can have a significant negative impact on a patient’s quality of life. The PET seems to be caused by a longitudinal concave defect in the mucosal valve at the superior aspect of its anterolateral wall and causes troublesome autophony of one’s own voice and breathing sounds. Authors evaluated whether Cartilage graft implantation to fill in the concavity within the patulous tubal valve may produce lasting relief of symptoms. 방법:Prospective trial was done. Patients (n = 12) were diagnosed as patulous eustachian tube disorder. They met previously established diagnostic criteria for PET. Transcanal plugging with tragal cartilage into Eustachian tube was performed in those patients as a new treatment option. All patients were followed up 1, 3, 6 and 12 months after treatment. Preoperative and postoperative questionnaire scores and tympanometry measurements were compared. 결과:11 out of 12 patients reported immediate complete relief of autophony. Results with an average follow-up of 10.8 months are as follows: 2 patients (16.7%) had complete relief; 5 patients (41.6%) had satisfied; 4 patients (33.3%) had significant but dissatisfied improvement; and 1 (8.3%) was unchanged. PET questionnaire showed significant reduction in their symptoms of autophony (p <0.05), conducted breath sounds (p = 0.001), and aural fullness (p = 0.029). There were no complications such as otitis media or occlusion symptom. 결론:Cartilage plugging into eustachian tube provides a safe and accessible surgical option for the treatment of PET and significantlyreduces the symptoms of autophony, conducted breath sounds, and aural fullness.