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Large retroperitoneal leiomyoma developed from the pelvic floor to the buttocks

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Abstract

Retroperitoneal leiomyoma is a very rare disease, with little reported information on its origin. Herein, we report a case of a large retroperitoneal leiomyoma that developed from the pelvic floor. A 44-year-old woman had a large mass protruding outside the body from the right hip. Imaging revealed a large tumor developing from the pelvic floor to the buttocks. It was difficult to identify the place of origin. Upon preoperative biopsy, the patient was diagnosed with retroperitoneal leiomyoma. Tumor removal with abdominoperineal and partial vaginal resection was performed. Based on the histological findings of the surgical specimens, she was diagnosed with a retroperitoneal leiomyoma (gynecologic type) via immunohistochemistry, the tumor cells were positive for αSMA, desmin, estrogen receptor(ER), and progesterone receptor(PgR), but negative for myoglobin, S-100, CD34, and MIB-1.This is a case of a large retroperitoneal leiomyoma that was successfully removed via abdominoperineal and partial vaginal resection.

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Abbreviations

CT:

Contrast-enhanced computed tomography

PET-CT:

Positron emission tomography-CT

18F-FDG:

Fluorodeoxyglucose

CEA:

Carcinoembryonic antigen

CA19-9:

Carbohydrate antigen 19–9

ER:

Estrogen receptor

PgR:

Progesterone receptor

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Acknowledgements

The authors would like to thank Enago (www.enago.jp) for the English language review.

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Authors and Affiliations

Authors

Contributions

All authors contributed to the study conception and design. HO and KT conceived the case presentation and drafted the manuscript. HO, KS, TO, KO, RK, KO, and TM participated in the treatment of the patient. HI determined the pathological diagnosis of the patient. MS, KS and HS revised the manuscript. All authors read and approved the final manuscript.

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Correspondence to Makoto Sohda.

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The authors declare that they have no conflict of interest.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008(5).

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Informed consent was obtained from the patient included in the study.

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Motegi, Y., Ogawa, H., Tateno, K. et al. Large retroperitoneal leiomyoma developed from the pelvic floor to the buttocks. Clin J Gastroenterol 14, 1169–1174 (2021). https://doi.org/10.1007/s12328-021-01436-0

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  • DOI: https://doi.org/10.1007/s12328-021-01436-0

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