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28.07.2017 | Original Article | Ausgabe 10/2017

Techniques in Coloproctology 10/2017

Magnetic resonance defecography versus videodefecography in the study of obstructed defecation syndrome: Is videodefecography still the test of choice after 50 years?

Zeitschrift:
Techniques in Coloproctology > Ausgabe 10/2017
Autoren:
G. P. Martín-Martín, J. García-Armengol, J. V. Roig-Vila, A. Espí-Macías, V. Martínez-Sanjuán, M. Mínguez-Pérez, M. Á. Lorenzo-Liñán, C. Mulas-Fernández, F. X. González-Argenté
Wichtige Hinweise
European Society of Coloproctology Eleventh Scientific and Annual Meeting, Milan, Italy, 28–30 September 2016.

Abstract

Background

The aim of the present study was to evaluate the diagnostic accuracy of magnetic resonance (MR) defecography and compare it with videodefecography in the evaluation of obstructed defecation syndrome.

Methods

This was a prospective cohort test accuracy study conducted at one major tertiary referral center on patients with a diagnosis of obstructed defecation syndrome who were referred to the colorectal surgery clinic in a consecutive series from 2009 to 2012. All patients underwent a clinical examination, videodefecography, and MR defecography in the supine position. We analyzed diagnostic accuracy for MR defecography and performed an agreement analysis using Cohen’s kappa index (κ) for each diagnostic imaging examination performed with videodefecography and MR defecography.

Results

We included 40 patients with Rome III diagnostic criteria of obstructed defecation syndrome. The degree of agreement between the two tests was as follows: almost perfect for anismus (κ = 0.88) and rectal prolapse (κ = 0.83), substantial for enterocele (κ = 0.80) and rectocele grade III (κ = 0.65), moderate for intussusception (κ = 0.50) and rectocele grade II (κ = 0.49), and slight for rectocele grade I (κ = 0.30) and excessive perineal descent (κ = 0.22). Eighteen cystoceles and 11 colpoceles were diagnosed only by MR defecography. Most patients (54%) stated that videodefecography was the more uncomfortable test.

Conclusions

MR defecography could become the imaging test of choice for evaluating obstructed defecation syndrome.

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