Copyright
©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Nov 16, 2025; 13(32): 110813
Published online Nov 16, 2025. doi: 10.12998/wjcc.v13.i32.110813
Published online Nov 16, 2025. doi: 10.12998/wjcc.v13.i32.110813
Mesonephric-like adenocarcinoma presenting with malignant peritonitis and suspected to originate from the fallopian tube: A case report
Shoko Sagawa, Fuminori Ito, Sonomi Kurose, Emiko Niiro, Makiko Taniguchi, Shinji Toyoda, Toshiyuki Sado, Department of Obstetrics and Gynecology, Nara Prefecture General Medical Center, Nara 630-8581, Japan
Masahide Nakatani, Department of Obstetrics and Gynecology, Nara Medical University, Kashihara 634-8521, Nara, Japan
Kohei Morita, Department of Pathology, Nara Prefecture General Medical Center, Nara 630-8581, Japan
Co-corresponding authors: Shoko Sagawa and Fuminori Ito.
Author contributions: Sagawa S analyzed the data and wrote the manuscript; Ito F designed the report and determined the clinical significance of the case; Sagawa S and Ito F played a key role in writing the paper; Nakatani M collected and analyzed the clinical, imaging, and pathological data; Kurose S, Niiro E, and Taniguchi M treated the patient in this case; Toyoda S and Sado T supervised the clinical interpretation and manuscript development; Morita K made the histopathological diagnosis of this case; All authors have read and approved the final manuscript. Sagawa S and Ito F are equally responsible for the integrity of the paper and are designated as co-corresponding authors.
Informed consent statement: Written informed consent was obtained from the patient for publication of this case report and accompanying images.
Conflict-of-interest statement: The authors have no conflicts of interest to declare.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Shoko Sagawa, Department of Obstetrics and Gynecology, Nara Prefecture General Medical Center, Shichijo-Nishimachi 2-chome 897-5, Nara 630-8581, Japan. shosgw3a.39.goodjob@gmail.com
Received: June 17, 2025
Revised: July 21, 2025
Accepted: September 25, 2025
Published online: November 16, 2025
Processing time: 149 Days and 21.8 Hours
Revised: July 21, 2025
Accepted: September 25, 2025
Published online: November 16, 2025
Processing time: 149 Days and 21.8 Hours
Core Tip
Core Tip: Mesonephric-like adenocarcinoma (MLA) is a highly aggressive rare disease. There have been few reports of MLA occurring primarily in the fallopian tube. MLA is primarily diagnosed by immunohistochemical staining. We report a case of MLA originating from the fallopian tube; the patient died 1 year and 6 months after initial treatment. Effective treatment options for MLA in the fallopian tubes are urgently needed. The presence of Kirsten rat sarcoma virus mutation is a notable characteristic when considering specific treatments for MLAs.