However, her otalgia and otorrhea were unresolved after 5 days of treatment, at which point a temporal bone CT scan was performed, revealing destruction of the left external auditory canal
at the inferior and posterior wall, as well as a blunted scutum (figure 2 A and B).
5) They occur mainly in the middle ear cleft but have also been reported intracranially and in the external auditory canal
A temporal bone computed tomography (CT) scan revealed narrowing in both internal auditory canals
and constriction of the contents of both otic capsules.
The tumor was removed from the internal auditory canal
with preservation of the VIIth and VIIIth nerves.
The external auditory canal
(EAC) and the thyroid gland are unusual sites for lymphoma.
At our office, otoscopy revealed the presence of a nodular mass that had engaged the anterior aspect of the left cartilaginous portion of the external auditory canal
External auditory canal
cholesteatomas are rare and estimated to be present in 1 of every 1,000 patients presenting to otologists.
Osteomas occurring in the internal auditory canal
are extremely rare.
They are often caused by a lateral blow to the head, and they tend to cause damage to the external auditory canal
and tympanic membrane.
4) In the meantime, a petrous apex granuloma may erode into the jugular foremen, carotid canal, and the internal auditory canal
prior to diagnosis.
We describe the case of a 23-month-old girl who presented with a single, large dermal inclusion cyst in the external auditory canal
Our review of the literature revealed that only 2 other cases of a dermal inclusion cyst in this location have been previously reported.
Magnetic resonance imaging (MRI) demonstrated a large, enhancing mass in the left mastoid that extended into the external auditory canal