Figure 21: Case report 18. 1. Only moderately intense signal in the diffusion-weighted HASTE sequence (left). Anatomic correlation in the 3D CISS sequence (right). Histology: cholesterol granuloma, not a cholesteatoma.
2. Cholesteatoma pearl (*) in the middle ear measuring 2 mm in diameter. The findings are below the detection limit of MRI. The salient area in the MR image intraoperatively corresponded to the cholesterol granuloma.