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A case of polypoid endometriosis with malignant transformation

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Abstract

Polypoid endometriosis is a benign, rare variant of endometriosis which forms multiple polypoid nodules in the female pelvis mimicking malignant tumors; however, it may rarely cause malignant transformation. We report magnetic resonance imaging findings of a case of polypoid endometriosis with malignant transformation. Multiple high-signal intensity polypoid nodules in the cul-de-sac surrounded by low-signal intensity rim-like fibrous adhesion protruding to the posterior wall of the uterine body were demonstrated on T2-weighted images. The polypoid nodules showed weak contrast enhancement compared with that of uterine myometrium on post-contrast T1-weighted images, and slight high signal intensity on diffusion-weighted images with relatively high mean apparent diffusion coefficient. Reported cases of polypoid endometriosis showed intense contrast enhancement similar to that of uterine myometrium, and weak contrast enhancement similar to that of endometrial carcinoma may be suggestive for malignant transformation of polypoid endometriosis.

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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

  2. Department of Obstetrics and Gynecology, University of Tokushima, 3-18-15, Kuramoto-cho, Tokushima, Japan

    Masato Nishimura

  3. Division of Pathology, Tokushima University Hospital, 2-50-1, Kuramoto-cho, Tokushima, Japan

    Yoshimi Bando & Akiko Yoneda

  4. Department of Radiological Technology, Tokushima Bunri University, 1314-1, Shido, Sanuki City, Kagawa, Japan

    Kenji Matsuzaki

Authors
  1. Mayumi Takeuchi
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  2. Kenji Matsuzaki
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  3. Yoshimi Bando
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  4. Masato Nishimura
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  5. Akiko Yoneda
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  6. Masafumi Harada
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Corresponding author

Correspondence to Mayumi Takeuchi.

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The authors declare that they have no conflict of interest.

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For this type of study, formal consent is not required, and the written informed consent of the patient was obtained for the MR examination.

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Takeuchi, M., Matsuzaki, K., Bando, Y. et al. A case of polypoid endometriosis with malignant transformation. Abdom Radiol 41, 1699–1702 (2016). https://doi.org/10.1007/s00261-016-0696-9

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  • DOI: https://doi.org/10.1007/s00261-016-0696-9

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