Fistula of the External Ear

Fistula of the external ear is a pathological process that occurs as a result of a defect in the embryonic development of the external auditory canal or surrounding tissues. Fistulas can present in a variety of ways, including discharge, bleeding, pain, and discomfort. They mostly occur in childhood, but are also possible in adults. A fistula is a pathological canal created in the external auditory canal and its parotid areas. Treatment of a fistula is performed surgically and usually consists of completely closing or sealing the outlet of the canal. The article examines in detail the description, causes and treatment of fistula of the external ear.

Fistula of the external ear (f.auris externae): description

The outer ear includes the pinna, the external auditory tube, and the external auditory canal, which opens into the external auditory canal. A fistula occurs when the ear canal is not fully formed, allowing bacteria and fluid from behind the edge of the ear or from infections in the inner ear canal to enter the ear canal. The canal may form along the outer opening of the canal, and also run inside the canal in close proximity to the edge of the ear. Often the fistula is chronic and aggravated by infection. Symptoms of a fistula vary in severity but may include redness, swelling, purulent discharge and ear pain. Severe cases can lead to significant hearing loss. Typically a fistula is diagnosed by imaging - such as a computed tomography (CT) scan or magnetic resonance imaging