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A woman with abdominal swelling

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  • Contributors SS: conception and design. SS and MS: acquisition of data and patient management. YS: interpretation of data. Furthermore, SS and YS have participated in writing the manuscript. All authors have read and approved the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Ethics approval The institutional Review Board at Juntendo Nerima Hospital.

  • Provenance and peer review Not commissioned; internally peer reviewed.

  • Patient consent for publication Obtained.

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