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The left middle ear is filled by soft tissue completely encasing the auditory ossicles. There is some residual ventilation near the tympanic ostium of the Eustachian tube. In this region, a linear calcification can also be seen. In the right middle ear, there are also some strands with soft tissue attenuation neighbouring the tympanic membrane, which is retracted on both sides. The right ossicles are not affected. Bilateral mastoid sclerosis is also present. There are no bony destructions hinting at a cholesteatoma.