absence of middle ear的用法和样例：
- You may have been suffering from acute infection of middle ear and mastoid.
- Diag-nosis of middle ear disease was made by tympanomery and otoscopic examina-tion.
- Objective:To study the clinical features of middle ear cholesteatoma in children.
- Conclusion:The destruction of scutum with erosion of attic lateral wall is a feature for cholesteatoma of middle ear.