Background: Middle ear ventilation and the drainage of secretions are the basic functions
of the eustachian tube. Eustachian tube (ET) dysfunction can lead to otitis media. Multiple
causes of ET dysfunction exist; ET obstruction is one of them. Osseous obliteration of ET is quite
rare. In the literature, there are two cases of solitary osteoma and a case of hamartoma with an osseous
content in the ET. Herein, this report describes the case of a patient with multiple osseous lesions
consistent with osteomas in the ET, causing ipsilateral otitis media with CT findings.
Case Report: A 53-year-old woman presented with left-sided intermittent otalgia and otorrhea.
Temporal bone computed tomography showed opacification of middle ear consistent with otitis media
and nearly complete blockage of the left ET lumen with multiple osseous lesions wall probably
consistent with osteomas on the left side.
Conclusion: There are limited data about the radiological features of ET osteoma due to its rare occurrence.
Radiographically, external ear osteoma generally appears as a single pedunculated hyperdense
mass on CT scan originating from the tympanosquamous or tympanomastoid suture line and
extending into the auditory canal with otherwise preserved canal dimensions. Considering this information,
osseous lesions arising from ET bone wall and extending into the lumen in the present
case were considered as osteomas. Especially in the case of unilateral chronic otitis media, ET
should not remain a neglected anatomical area.