External auditory canal stenosis is often accompanied by atresia, which is common in congenital developmental abnormalities. Congenital stenosis and atresia of the external auditory canal are embryonic development disorders, which are caused by developmental malformations of the first parotid sulcus and the posterior part of the first and second parotid arches. Therefore, they are often accompanied by maxillofacial bone hypoplasia. According to the degree of deformity, it can be divided into three types: mild, moderate and severe. Clinically, moderate deformity is the most common. It will affect the hearing function, and surgery is mainly performed, such as external auditory canal tympanoplasty or inner ear fenestration. Hearing function affected

Congenital stenosis and atresia of the external auditory canal can affect hearing function. Embryonic Developmental Disorders

Congenital external auditory canal stenosis and atresia are embryonic development disorders, which are caused by developmental malformations of the first parotid sulcus and the posterior part of the first and second parotid arches. Maxillofacial bone hypoplasia

Congenital external auditory canal stenosis and atresia are often accompanied by maxillofacial bone hypoplasia. Surgical treatment

Congenital stenosis and atresia of the external auditory canal are mainly treated with surgery, such as external auditory canal plasty or external auditory canal tympanoplasty or inner ear fenestration.