Figure 1: HRCT scans of CAS.
From: Congenital Aural Stenosis: Clinical Features and Long-term Outcomes
(A) the right side stenotic EAC (black arrow) was 1 mm without cholesteatoma in an 8-year-old boy with CAS (sagittal view). (B–D) bilateral EAC cholesteatoma (black arrow) in a 17-year-old girl with CAS, the left side EAC was 9 mm (B, sagittal view; C, axial view; D, coronal view).
