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- 1. The mastoid bone is a bone located behind the ear (felt as a hard bump behind the ear). Inside it looks like a honeycomb, with the spaces filled with air. These air cells are connected to the middle ear through an air filled cavity called the mastoid antrum. Mastoid process
- 12. Picture of Mastoidectomy showing a large cholesteatoma in the mastoid antrum .
- 13. A meatoplasty has been performed to enlarge the external auditory canal and allow easy access to the mastoid bowl for inspection and cleaning. The reconstructed eardrum is seen anteriorly.
- 14. Left Canal Wall Down Mastoidectomy. This patient had a modified radical mastoidectomy with tympanoplasty. The posterior bony canal has been removed and part of the dry "mastoid bowl" is visible posterior and superior to the reconstructed tympanic membrane.