Residual choleateatoma was found more frequently in the anterior epitympanum, the oval window niche, and the hypotympanum near the tubal orifice.
容易残存的部位，依序为上鼓
前方、卵圆窗及下鼓近耳咽管处。
Residual choleateatoma was found more frequently in the anterior epitympanum, the oval window niche, and the hypotympanum near the tubal orifice.
容易残存的部位，依序为上鼓前方、卵圆窗及下鼓近耳咽管处。
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