First branchial cleft cyst accompanied by external auditory canal atresia and middle ear malformation: A case report

Figure 3 Comparison of preoperative and postoperative pure tone audiometry in the right ear. A: Shows the preoperative pure tone audiometry, the preoperative air-bone conduction gap was 56 decibels; B: Shows postoperative pure tone audiometry, the postoperative air-bone gap was 21 decibels, and the pure-tone average gain was 35 decibels.