Abstract
Medial canal fibrosis is an interesting type of acquired meatal atresia that is characterized by formation of a solid core of fibrous tissue in the medial part of the external auditory meatus abutting the tympanic membrane. A review of the literature showed that many different terms have been used interchangeably to report the same or similar condition. This is a case of medial canal fibrosis being reported to emphasize the importance in diagnosing this rare but easily treatable disease. A 16 yrs old female presented with bilateral conductive hearing loss & history of recurrent rhinitis & sinusitis. CT Temporal bone showed soft tissue density lesions in bilateral bony EAC (External auditory canal) with no bony erosion & normal middle ear. A diagnosis of Medial canal fibrosis was given. The patient was operated & biopsy of the specimen came out to be inflammatory granulation tissue. Nepalese Journal of Radiology; Vol. 2; Issue 2; July-Dec. 2012; 69-71 DOI: http://dx.doi.org/10.3126/njr.v2i2.7689
Highlights
Medial canal fibrosis is an interesting type of acquired meatal atresia that is characterized by formation of a solid core of fibrous tissue in the medial part of the external auditory meatus abutting the tympanic membrane
Post inflammatory medial canal fibrosis is a distinct entity characterized by the formation of fibrous tissue in the medial bony external auditory meatus
The term acquired medial canal fibrosis best describes this entity with regard to the pathology and the pathophysiology of the condition
Summary
Medial canal fibrosis is an interesting type of acquired meatal atresia that is characterized by formation of a solid core of fibrous tissue in the medial part of the external auditory meatus abutting the tympanic membrane. She had no history of ear surgery. Our otologic examination revealed that the both ear canal were short and terminated with a skin-covered barrier. Thin-section CT (0.6-mm-thick transverse coronal and sagittal sections) of the bilateral temporal bone revealed soft tissue density lesion along the entire length of bony external auditary canal with no bony erosions (Fig 1, 2).
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