Classical imaging techniques are inaccurate to detect residual cholesteatoma. The aim of our study is to evaluate the value of diffusion-weighted MR imaging and delayed contrast enhanced T1 weighted spin-echo sequences in the detection of residual cholesteatoma in children, in a large serie of surgically verified cases.
Primary Outcome Measures:
- Technical characteristics of the examination MRIs represented by the sensibility and the specificity of the test,
with regard to the results stemming from the surgical operation [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
Secondary Outcome Measures:
- Only a surgical operation will confirm the diagnosis of cholesteatoma doing it again or residual. [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- It is necessary to test the following diagnostic method: the analysis of the morphological sequences in T1 and in
T2 will allow to appreciate the existence or not of a filling of the cavity tympanique or the mastoïde and to
clarify its localization. [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
| Estimated Enrollment: |
50 |
| Study Start Date: |
February 2008 |
| Estimated Study Completion Date: |
July 2009 |
| Estimated Primary Completion Date: |
January 2009 (Final data collection date for primary outcome measure) |
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1
Analysis of the value of the imaging of distribution and the late sequence to differentiate the cholesteatoma of the fibrosis in the follow-up operating post at the child
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Other: MR Imaging
MR imaging in the post operative follow-up of cholesteatoma in children
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Classical imaging techniques are inaccurate to detect residual cholesteatoma. Thin-section CT detects that the postoperative cavity is filled with a soft tissue mass. Classical MR imaging (T2 and T1 weighted spin-echo sequences) can not provide additionnal information about the nature of this filling : cholesteatoma, granulation or fibrous tissue.
Purpose
