Tumors and tumor-like lesions associated with endometriosis

Kitai, Satomi
2020 · doi:10.26044/ecr2020/c-14011 · W6945951008
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This educational exhibit describes magnetic resonance imaging features of ovarian malignancies and benign tumor-like lesions associated with endometriosis to facilitate accurate diagnostic differentiation.

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This educational exhibit reviews magnetic resonance imaging findings for tumors and tumor-like lesions associated with endometriosis, specifically focusing on ovarian malignancies and benign mimics. It details the radiological characteristics of clear cell carcinoma, endometrioid carcinoma, and seromucinous borderline tumors that may arise within endometriotic cysts, noting features such as loss of shading and enhancing nodules. The paper also highlights benign conditions like polypoid endometriosis and decidual changes that can mimic malignant processes, aiming to facilitate accurate diagnostic interpretation. This paper is centrally about endometriosis — specifically the imaging differentiation of malignant and benign lesions arising in association with endometriomas.

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Keywords

Not applicable, Inflammation, Cancer, Diagnostic procedure, MR, Genital / Reproductive system female, Genitourinary Authors: S. Kitai; Tokyo/JP DOI: 10.26044/ecr2020/C-14011 Learning objectives To be familiar with the imaging findings of ovarian cancer and ovarian borderline tumors, which may arise in endometriotic cysts. To be aware of benign tumor-like lesions, which might appear in endometriosis, mimicking malignancy. To present rare tumors and tumor-like lesions associated with endometriosis

Background

Tumors and tumor-like lesions are known to arise in association with endometriosis. Solid portion associated with endometriotic cyst Malignant: clear cell carcinoma, endometrioid carcinoma Borderline: seromucinous borderline tumor (SMBT) Benign: polypoid endometriosis, decidual change during pregnancy Findings and procedure details General imaging findings ofovarian carcinoma associated with endometriosis1, 2) Enlargement of endometriotic cyst T2WI: loss of shading (Fig. 1) Enhancing nodule: CE-subtraction image(Fig. 2, 3) Usually absence of massive ascites or peritoneal lesion MR imagingfeaturesof clear cell carcinoma of the ovary3, 4) Unilocular cystic masses with solid protrusions Rarely multilocular or solid Solid protrusions: solitary or pleural MRimaging featuresofendometrioid cancerof the ovary5) Similar to clear cell carcinoma (Fig. 4), however, predominantly multilocular appearance Bilateral, 17%(Fig. 5) Association with endometrial cancer, 10-15%(Fig. 6) MRimaging featuresof SMBTof...

Conclusion

To be aware of tumors and tumor-like lesions associated with endometriosis, will fascilate the imaging diagnosis. Personal information and conflict of interest S. Kitai; Tokyo/JP - Advisory Board at Chugai Pharmaceutical Co., LTD

References

Tanaka YO. AJR Am J Roentgenol. 175:1423-30, 2000 McDermott S, et al: MR imaging of malignancies arising in endometriomas and extraovarian endometriosis.RadioGraphics. 32:845–863, 2012 Matsuoka Y, et al: MR imaging of clear cell carcinoma of the ovary. Eur Radiol.11:946-51, 2001 Matsuoka Y, et al: MR imaging of clear cell carcinoma of the ovary. Eur Radiol.11:946-51, 2001 Manabe T. J Comput Assist Tomogr. 31:229-35, 2007 Kataoka M.ComputAssist Tomogr.2002 Jul-Aug;26(4):532-7. Kurata Y ,et al, Eur Radiol, 2016 Kurata Y ,et al, Magn Reson Med Sci, 2017 Shimamoto...

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Condition tags

endometriosis

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