Figure 6.5 Right ear. Grade I atelectasis with the malleus slightly medialized. An epitympanic retraction pocket is also seen. Middle ear effusion with yellowish color can be appreciated. Pure tone audiogram revealed a 40-dB conductive hearing loss (Fig. 6.6), whereas the tympanogram was type B, i.e., typical of middle ear effusion (Fig. 6.7). In this case, the insertion of a ventilation tube is indicated to avoid further retraction of the tympanic membrane, to aerate the middle ear, and to improve hearing.
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