Cholesteatoma Glossary
Canal wall down procedure
a procedure where the bony partition between the back part of the ear canal and mastoid is removed
Canal wall up procedure
a procedure where the bony partition between the back part of the ear canal and mastoid is kept intact
Congenital cholesteatoma
a cholesteatoma that arises in an ear from squamous epithelium that became entrapped within the middle ear or petrous apex
Keratin
a protein found in cells that form squamous epithelium
Mastoid
the bone located directly behind the external ear which communicates with the middle ear
Mastoidectomy
a procedure to remove part of the mastoid in order to clean out infection and remove cholesteatoma
Modified radical mastoidectomy
a procedure where the bony partition between the back part of the ear canal and mastoid is removed and an ossicular reconstruction with repair of the eardrum is also performed
Ossicles
the three bones behind the eardrum, namely the malleus, incus and stapes
Ossicular reconstruction
a procedure to repair the ossicles so that sound transmission can occur to the inner ear
Petrous apex
bone that is located deep to the inner ear
Petrous apex epidermoid
a cholesteatoma that arises from squamous epithelium that became entrapped within the petrous apex
Radical mastoidectomy
a procedure done where the eardrum, malleus, and incus are removed and the bony partition between the back part of the ear canal and mastoid is also removed.
Tympanoplasty
a procedure to repair the eardrum and the ossicles
About Dr. Prasad
Dr. Sanjay Prasad MD FACS is a board certified physician and surgeon with over thirty-two years of sub-specialty experience in Otology, Neurotology, advanced head and neck oncologic surgery, and cranial base surgery. He is chief surgeon and founder of the private practice, Metropolitan NeuroEar Group, located in the metropolitan Washington D.C. area.