Items tagged “middle ear”
18 results found










Article
Acquired cholesteatoma
Acquired cholesteatomas makeup 98% of all middle ear cholesteatomas and are almost always closely related to the tympanic membrane, from which most are thought to arise.
Clinical presentation
The vast majority of acquired cholesteatomas develop as a result of chronic middle ear infection and ...
Article
Cholesterol granuloma
Cholesterol granuloma (CG), also sometimes called a chocolate cyst of the ear or blue domed cyst, is a special type of middle ear granulation tissue which is particularly prone to bleeding and is a frequent cause of a hemotympanum. Cholesterol granulomas represent the most common cystic lesion o...
Article
Middle ear effusion
Middle ear effusions are frequent in children due to prominent adenoids and horizontal Eustachian tubes. These do not require imaging, and can be treated expectantly / medically / surgically with tympanostomy tubes. Eustachian tube dysfunction is the accepted etiology, with resorption of air and...
Case
Cholesteatoma

Diagnosis almost certain
Published 26 Jan 2009
71% complete
CT
Case
Bilateral otosclerosis with left stapes prosthesis

Diagnosis almost certain
Published 05 Feb 2009
59% complete
CT
Article
Fissula ante fenestram
The fissula ante fenestram (plural: fissula ante fenestras) is a small connective tissue-filled cleft in the otic capsule of the temporal bone, not typically visible on CT. The area around the fissula ante fenestram is the usual origin of fenestral otosclerosis.
Gross anatomy
The fissula ante ...
Case
Cholesteatoma

Diagnosis certain
Published 14 Apr 2010
83% complete
CT
Case
Cholesteatoma

Diagnosis almost certain
Published 14 Apr 2010
77% complete
CT
Case
Cholesteatoma formation (illustrations)

Diagnosis not applicable
Published 10 May 2010
29% complete
Diagram
Case
Dehiscent jugular bulb

Diagnosis certain
Published 23 May 2010
56% complete
CT
Case
Auditory anatomy - Gray's anatomy illustration

Diagnosis not applicable
Published 19 Aug 2010
29% complete
Diagram
Case
Recurrent cholesteatoma

Diagnosis certain
Published 17 Sep 2010
95% complete
MRICT
Article
Tensor tympani muscle
The tensor tympani muscle is a short muscle in the middle ear that arises from the superior surface of the cartilaginous part of the Eustachian tube, the greater wing of the sphenoid, and the petrous part of the temporal bone. It passes into the protympanum of the tympanic cavity, covered by the...
Article
Innervation of the muscles of the middle ear (mnemonic)
A useful mnemonic to remember innervation of the muscles of the middle ear is:
ST
Mnemonic
S: stapedius is supplied by a branch of the facial nerve - the Seventh cranial nerve. It is also the Smallest muscle in the body, and inserts onto the neck of Stapes.
T: tensor tympani is supplied by a...
Case
Cholesteatoma

Diagnosis almost certain
Published 19 Jul 2017
80% complete
MRI
Case
Bilateral cholesteatoma

Diagnosis almost certain
Published 07 Aug 2017
78% complete
CTMRI
Article
Anterior epitympanic recess
The anterior epitympanic recess, also known as the supratubal recess, is a small discrete space in the epitympanum anterior to the malleus. It is separated from the epitympanum proper by the cog.
Case
Glomus jugulare paraganglioma

Diagnosis probable
Published 20 Apr 2019
70% complete
MRICT