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Vol. 66. Issue 4.
Pages 199-204 (July - August 2015)
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Vol. 66. Issue 4.
Pages 199-204 (July - August 2015)
Original article
Diagnostic Capacity of Non-echo Planar Diffusion-weighted MRI in the Detection of Primary and Recurrent Cholesteatoma
Capacidad diagnóstica de la resonancia magnética con técnica de difusión no eco-planar en la detección de colesteatomas primarios y recurrentes
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Laura Garridoa,
Corresponding author
lauragarridogarcia@gmail.com

Corresponding author.
, Carlos Cenjorb, Julia Montoyac, Ana Alonsod, Jose Granella, Raimundo Gutiérrez-Fonsecaa
a ENT Department, Rey Juan Carlos University Hospital, Móstoles, Spain
b ENT Department, Fundación Jiménez Díaz, Autónoma University Hospital, Madrid, Spain
c Radiology Department, Fundación Jiménez Díaz, Autónoma University Hospital, Madrid, Spain
d Radiology Department, Rey Juan Carlos University Hospital, Móstoles, Spain
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Tables (2)
Table 1. Test Results for DW MRI.
Table 2. Non-EPI DW MRI Studies.
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Abstract
Introduction and aims

the aim of this study was to determine the certainty of non-echo-planar imaging diffusion-weighted magnetic resonance imaging (non-EPI DW MRI) in the diagnosis of primary and recurrent cholesteatoma in patients with clinical suspicion of cholesteatoma, assessing the sensitivity and specificity of the test in both groups.

Methods

Seventy-five patients with clinical suspicion of cholesteatoma were included in our study. Forty-eight cases had primary suspicion of cholesteatoma and 27 cases had recurrent suspicion of cholesteatoma. All patients received non-EPI DW MRI tests before surgery, and radiological and surgical findings were compared.

Results

Sensitivity, specificity and the positive and negative predictive value for primary diagnosis of cholesteatoma group were 91.2%, 50%, 81.6% and 70%, respectively. For the recurrent cholesteatoma group these results were 100%, 66.7%, 90.9% and 100%, respectively.

Conclusion

Non-echo-planar imaging diffusion-weighted magnetic resonance imaging is a high sensitivity imaging test for detecting cholesteatoma, for both primary diagnosis and for recurrent cases.

Keywords:
Cholesteatoma
Magnetic resonance imaging
Non-echo-planar diffusion-weight
Resumen
Introducción y objetivos

El objetivo de este estudio es determinar la fiabilidad de la resonancia magnética con técnica de difusión no eco-planar en el diagnóstico de pacientes con sospecha clínica de colesteatoma primario y recurrente, evaluando la sensibilidad y especificidad de la prueba en ambos grupos.

Métodos

75 pacientes con sospecha clínica de colesteatoma fueron incluidos en el estudio. 48 pacientes presentaban sospecha clínica de colesteatoma primario y 27 pacientes presentaban sospecha clínica de colesteatoma recurrente. En todos los pacientes se realizó una resonancia magnética con técnica de difusión no eco-planar previa a la cirugía, y se compararon los resultados radiológicos con los resultados quirúrgicos obtenidos.

Resultados

La sensibilidad, especificidad, valor predictivo positivo y negativo en el grupo de colesteatoma primario fue del 91,2%, 50%, 81,6% y 70% respectivamente y en el grupo de colesteatoma recurrente fue del 100%, 66,7%, 90,9% y 100%, respectivamente.

Conclusión

La RM con técnica de difusión no eco-planar es una prueba altamente sensible en el diagnóstico del colesteatoma tanto en pacientes con colesteatoma primario como en recurrencias.

Palabras clave:
Colesteatoma
Resonancia magnética
Técnica de difusión no eco-planar

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