[Congenital external and middle ear malformation-with 62 ears report]

To determine the relationship between external ear malformation and middle ear abnormality, and also the results of surgical treatment.

Fifty-two cases with external ear malformation (62 ears) was dividied into two groups:the minor group and severe group. All the patients received surgical treatment, 48 ears by transmastoid approach and 14 ears by "direct entrance" approach.

The middle ear abnormality was minor in minor group,and severe in the patients with severe external ear malformation. In 93.5% cases the hearing threshold improved more than 15 dB in 3 months after operation, and reduce to 85.5% in 3 years follow up.

The middle ear malformation is corresponding to external ear malformation. The effect of surgical treatment is different according to the degree of malformation and surgical complication.