A Case of Perilymphatic Fistula with Inner Ear Anomaly Diagnosed Preoperatively by the Cochlin-Tomoprotein Detection Test

Figure 1

Pure tone audiometry of case 1 before surgery (left ear). (a) Low-tone sensorineural hearing loss (21.3 dB). (b) Hearing had once gotten better (13.8 dB). (c) Exacerbations and remissions (46.3 dB). (d) The hearing suddenly worse (66.3 dB).

(a)

(b)

(c)

(d)