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European Radiology
Published in: European Radiology 7/2011

01-07-2011 | Urogenital

Diagnosis of colorectal endometriosis: contribution of contrast enhanced MR-colonography

Authors: Arnaldo Scardapane, Stefano Bettocchi, Filomenamila Lorusso, Amato Antonio Stabile Ianora, Antonella Vimercati, Oronzo Ceci, Maurilia Lasciarrea, Giuseppe Angelelli

Published in: European Radiology | Issue 7/2011

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Abstract

Objective

To investigate the contribution of contrast-enhanced MR-colonography (CE-MR-C) for the diagnosis of intestinal endometriosis.

Methods

One hundred and four women with suspected endometriosis were prospectively enrolled. All patients were subjected to MRI consisting of two phases: pelvic high-resolution MRI (HR-MRI) followed by CE-MR-C after colonic distension using a 1.5-liter water enema and injection of 0.15 ml/kg of 0.5 M gadolinium-DTPA with T1w high-resolution isotropic volume (THRIVE) and balanced turbo field echo (BTFE) images. HR-MRI and CE-MR-C were considered as two datasets, which were independently reviewed by two radiologists with 12 and 2 years’ experience respectively. The presence of deep pelvic endometriotic lesions with particular attention to colorectal involvement was recorded.

Results

MRI findings correlated with laparoscopy in all cases. Thanks to CE-MR-C images, sensitivity, specificity, PPV, NPV and accuracy for diagnosis of colorectal endometriosis increased from 76%, 96%, 84%, 93% and 91%, to 95%, 97%, 91%, 99% and 97% for the most experienced radiologist and from 62%, 93%, 72%, 89% and 85%, to 86%, 94%, 82%, 96% and 92% for the less experienced radiologist; moreover, the interobserver agreement increased from 0.63 to 0.80 (Cohen’s K test).

Conclusion

CE-MR-C allows easier recognition of colorectal endometriosis and higher interobserver agreement.
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Metadata
Title
Diagnosis of colorectal endometriosis: contribution of contrast enhanced MR-colonography
Authors
Arnaldo Scardapane
Stefano Bettocchi
Filomenamila Lorusso
Amato Antonio Stabile Ianora
Antonella Vimercati
Oronzo Ceci
Maurilia Lasciarrea
Giuseppe Angelelli
Publication date
01-07-2011
Publisher
Springer-Verlag
Published in
European Radiology / Issue 7/2011
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-011-2079-5

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