The use of MRI DWI-imaging in assessment of cholesteatoma recurrences after canal wali up technique
Journal Title: Otolaryngologia Polska - Year 2012, Vol 66, Issue 0
Abstract
SUMMARY Introduction: The use of closed technique in cholesteatoma treatment carries a significant risk of development of residual disease thus requires a second look operation in a proportion of patients. In those with no residual cholesteatoma the second surgery could be avoided. The aim of the study: was to evaluate the use of non-echo planar HASTE diffusion-weighted MR imaging in the detection of cholesteatoma in patients after canal wali up surgery due to cholesteatoma. Material and Methods: We evaluate the results of half-Fourier-acquisition single-shot turbo-spin-echo (HASTE) diffusion-weighted magnetic resonance imaging in 18 patients after canal wali up surgery performed 6 to 20 months after primary surgery. 16 patients were operated in our center and 2 elsewhere. Ali the patients underwent second look surgery that verified the result of MRI scanning. Results: MRI DWI detected 2 cholesteatomas in patients operated elsewhere and none in patients operated in our center. Four cholesteatomas were found during second look operations. Two false negatives were in 1 patient with cholesteatoma pearl of less than 2 mm in diameter and in 1 patient with mural cholesteatoma. There were no false positive results. Conclusion: Non EPI MRI DWI can be used as a screening tool to detect residual or recurrent cholesteatoma and may substitute the need of second look surgery.
Authors and Affiliations
Marcin Szymański, Agnieszka Trojanowska, Anna Szymańska, Kamal Morshed
Keywords
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