TECHNIQUE: High-resolution 0.7 mm sections through the temporal bones were obtained in the axial plane and were reformatted in the coronal plane. Images were viewed on soft tissue and bone windows. COMPARISON: None FINDINGS: On the right side, the external auditory canal is atretic. The right auricle is small and dysplastic with no recognizable normal pinna. The middle ear and mastoid air cells are hypoplastic.