Fig. 4From: Distribution of different morphological types of anterior epitympanic plate “cog” and Köerner’s septum in CT images of cholesteatomatous and non-cholesteatomatous CSOM: is it really significant?Case 1: A 32-year-old male with non-cholesteatomatous CSOM, showing type-I cog (a) shown as a complete thin bony plate. Reformatted images in (b), (c), and (d) reveal intact ossicular chain; malleus-incus complex in (b) and (c), and stapedial supra-structure in (d)Back to article page