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Diffusion-Weighted MR Imaging of Cholesteatoma in Pediatric and Adult Patients Who Have Undergone Middle Ear Surgery

P. Aikele1, T. Kittner1, C. Offergeld2, H. Kaftan2, K.-B. Hüttenbrink2 and M. Laniado1

1 Department of Diagnostic Radiology, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstr. 74, D-01307 Dresden, Germany.
2 Clinic for Ear, Nose and Throat, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, D-01307 Dresden, Germany.



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  		Fig. 1A. —68-year-old woman with residual cholesteatoma 11 months after surgery. Axial unenhanced T1-weighted MR image shows cholesteatoma as hypointense tissue mass (arrows) in left petrous apex and partially in clivus.

 


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  		Fig. 1B. —68-year-old woman with residual cholesteatoma 11 months after surgery. Axial T2-weighted MR image shows hyperintense tissue mass.

 


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  		Fig. 1C. —68-year-old woman with residual cholesteatoma 11 months after surgery. Diffusion-weighted MR image shows cholesteatoma is markedly hyperintense.

 


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  		Fig. 2A. —26-year-old man with small recurrent cholesteatoma 14 months after surgery. T2-weighted MR image shows hyperintense mass (arrow) in right mastoid.

 


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  		Fig. 2B. —26-year-old man with small recurrent cholesteatoma 14 months after surgery. Diffusion-weighted MR image shows cholesteatoma (curved arrow) is markedly hyperintense. Note hyperintense susceptibility artifacts (straight arrows) at dorsomedial aspect of petrous bone at air–bone border.

 

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