Detection of postoperative residual cholesteatoma with delayed contrast-enhanced MR imaging: initial findings View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2002-07-16

AUTHORS

Marc T. Williams, Denis Ayache, Corinne Alberti, Françoise Héran, François Lafitte, Monique Elmaleh-Bergès, Jean-Daniel Piekarski

ABSTRACT

. Our objective was to assess the value of delayed contrast-enhanced T1-weighted spin-echo MR imaging in the detection of residual cholesteatoma in patients who have undergone canal wall-up tympanoplasty procedure. The MR imaging was obtained prior to revision surgery in 18 patients with opacity of the post-operative cavity at CT examination 12–18 months after canal wall-up tympanoplasty. In each patient the following was performed: precontrast T1- and T2-weighted images; and early and delayed contrast-enhanced axial and coronal T1-weighted imaging. Early and delayed MR imaging results were separately compared with surgical second-look findings. Sensitivity, specificity, and predictive values were evaluated for early and delayed post-contrast MR imaging, compared with second-look surgery findings. A residual cholesteatoma was correctly identified in 8 of 9 cases with delayed contrast-enhanced T1-weighted MR imaging. Mean sensitivity, specificity, positive predictive value, and interobserver agreement (evaluated by kappa statistics) were, respectively, 85.2, 92.6, 92.6%, and kappa=0.78 for the delayed contrast-enhanced MR imaging technique. The same parameters were, respectively, 96.3, 33.3, 60.6, and 0.30 for the early contrast-enhanced T1-weighted MR images. We conclude that delayed contrast-enhanced T1-weighted MR imaging is reliable for the detection of residual cholesteatomas of the middle ear in patients who have undergone canal wall-up tympanoplasty. More... »

PAGES

169-174

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00330-002-1423-1

DOI

http://dx.doi.org/10.1007/s00330-002-1423-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1075222283

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/12541126


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