Efficiency of MR imaging to orientate surgical treatment of posterior deep pelvic endometriosis

Catherine Roy, Céline Balzan, C. Balzan, Véronique Thoma, Benoît Sauer, Benoit Sauer, Arnaud Wattiez, Joel Leroy, Joël Leroy
Abdominal imaging · 2008 · vol. 34(2) , pp. 251–259 · doi:10.1007/s00261-008-9367-9 · PMID:18235982 · W2166958273
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⚙ AI-generated summary by claude@2026-06+body, 2026-06-12 ⓘ

This retrospective study evaluated MRI's accuracy for detecting intestinal wall invasion by endometriosis, finding combined coils superior to a single coil for preoperative staging.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-09 · read from full text ⓘ

This retrospective study evaluated how accurately MRI using pelvic phased-array and endocavitary coils detects whether an endometriotic nodule in posterior deep pelvic endometriosis invades the intestinal muscular layer. Forty-seven surgical patients underwent MRI with conventional sequences using both coils, with intestinal wall invasion defined by a thin bright T2-weighted layer and post–Gd T1-weighted enhancement pattern; MRI findings were correlated with surgical and pathological results of resected nodules. Combined use of both coils showed higher diagnostic performance than phased-array alone, with endovaginal coil demonstrating sensitivity to be higher than phased-array alone, and overall accuracy reported as 97–83% (endovaginal and combined) versus 87% (phased-array alone). This paper is centrally about endometriosis — it focuses on MRI staging accuracy for intestinal wall invasion to guide surgical management of posterior deep endometriosis.

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Abstract

Objective The purpose of this retrospective study was to evaluate the accuracy of MRI using pelvic-phased-array and endocavitary coils in detecting intestinal wall invasion by an endometriotic nodule.

Materials and methods

Forty-seven patients (32.1 ± 4.2 years) who were planned for a surgical cure of deep endometriosis underwent MRI with conventional sequences using both coils. A thin bright layer on T2-w with enhancement on post-Gd T1-w defined our MR pattern for muscular layer involvement. MR results were correlated with surgical and pathological findings of the removed nodule.

Results

MR results for Group 1 (both coils) achieved a sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of 100–63%, 96–92%, 90–70%, 100–85%, and 97–83% for endovaginal coil and phased-array coil, respectively. Group 2 (phased-array coil) had a sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of 73%, 93%, 84%, 88%, and 87% for this coil, respectively.

Conclusion

Combined pelvic-phased-array and endovaginal coils are better than phased array alone in the detection of intestinal wall invasion. Easy to perform, it has to be considered as a preoperative staging for deep posterior endometriosis to orientate the surgical management. Similar content being viewed by others

References

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Radiology 241:132–141 Tran KT, Kuijpers HC, Willemsen WN et al (1996) Surgical treatment of symptomatic rectosigmoid endometriosis. Eur J Surg 162:139–141 Author information Authors and Affiliations Corresponding author Rights and permissions About this article Cite this article Roy, C., Balzan, C., Thoma, V. et al. Efficiency of MR imaging to orientate surgical treatment of posterior deep pelvic endometriosis. Abdom Imaging 34, 251–259 (2009). https://doi.org/10.1007/s00261-008-9367-9 Published: Issue date: DOI: https://doi.org/10.1007/s00261-008-9367-9

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Intestinal Diseases Magnetic Resonance Imaging Adult Endometriosis Endometriosis Endometriosis Female Humans Image Processing, Computer-Assisted Intestinal Diseases Intestinal Diseases Intestinal Diseases Retrospective Studies Sensitivity and Specificity

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