1.Residual choleateatoma was found more frequently in the anterior epitympanum, the oval window niche, and the hypotympanum near the tubal orifice.
容易残存部位,依鼓室前方、卵圆窗及下鼓室近耳咽管处。
2.Conclusion: The shape-memory polymer based polylactide can stimulate fiber hyperplasia after insert in tubal of rabbits and this material can biodegradate, it is atoxic.