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Susceptibility-weighted MRI of extra-ovarian endometriosis: preliminary results

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Abstract

Purpose

Extra-ovarian endometriosis (EOE) usually appears as solid masses mimicking neoplasms both clinically and radiologically. Detection of blood products within a lesion may be suggestive of its endometriotic nature. We present a descriptive study of MR imaging findings that include susceptibility-weighted imaging (SWI) for patients with EOE.

Methods

Eight pathologically proven EOE (3 bowel, 2 bladder and 3 abdominal wall) were evaluated. Fat-saturated T1-weighted images (fsT1WI) and SWI were obtained using 1.5T MR imaging. Images were reviewed for the presence of signal voids on SWI and of high-intensity foci on fsT1WI.

Results

High-intensity foci reflecting subacute hemorrhage were detected in 4 of 8 lesions (50%) on fsT1WI, whereas signal voids reflecting acute to chronic hemorrhage were detected in all 8 lesions (100%) on SWI.

Conclusions

SWI is a sensitive MRI technique which demonstrates hemorrhage of varying chronicity in patients with EOE and may improve future MRI characterization of EOE.

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Authors and Affiliations

  1. Department of Radiology, University of Tokushima, 3-18-15, Kuramoto-cho, Tokushima, 7708503, Japan

    Mayumi Takeuchi, Kenji Matsuzaki & Masafumi Harada

Authors
  1. Mayumi Takeuchi
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  2. Kenji Matsuzaki
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  3. Masafumi Harada
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Correspondence to Mayumi Takeuchi.

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Takeuchi, M., Matsuzaki, K. & Harada, M. Susceptibility-weighted MRI of extra-ovarian endometriosis: preliminary results. Abdom Imaging 40, 2512–2516 (2015). https://doi.org/10.1007/s00261-015-0378-z

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  • DOI: https://doi.org/10.1007/s00261-015-0378-z

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