記述言語：英語   掲載種別：研究論文（学術雑誌）  

Mucinous cystic neoplasms of the liver (MCNs-L) are rare cystic tumors characterized by multilocular cysts lined with a mucin-producing epithelium and supported by ovarian-like stroma. These tumors account for <5% of all cystic liver lesions and carry a potential risk of malignant transformation, necessitating early diagnosis and surgical resection. This report describes the successful laparoscopic partial liver resection of segments 4 and 5 for a large MCN-L in a woman in her 40s who presented with upper abdominal discomfort. Imaging studies revealed a multilocular cystic lesion measuring 11.9 × 8.5 × 13.0 cm in segments 4 and 5 of the liver. The primary challenges were the size of the lesion and the need to prevent cystic content spillage during surgery. Using meticulous techniques, including the use of a retrieval bag and controlled aspiration, we successfully excised the tumor laparoscopically and without contamination. Pathological analysis confirmed a diagnosis of mucinous cystic adenoma with no evidence of malignancy. The patient recovered uneventfully and was discharged on postoperative day 7. This case highlights the feasibility and safety of a laparoscopic approach for large MCNs-L. Furthermore, it underscores the importance of preoperative planning, precise surgical techniques, and measures to prevent cystic content dissemination. Minimally invasive surgery offers significant benefits, including reduced recovery time and improved cosmetic outcomes, and can be effectively applied to large hepatic cystic lesions by experienced surgical teams.

DOI： 10.1272/jnms.JNMS.2026_93-503

PubMed

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記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Adenomatoid tumors (ATs) are rare, benign neoplasms occurring mainly in reproductive organs such as the uterus, ovaries, fallopian tubes, and testes. Uterine adenomatoid tumors (UATs) are generally incidentally diagnosed during histopathological examination of excisional biopsies performed for other indications, most commonly uterine leiomyomas. We herein present a 38-year-old woman who underwent laparoscopic excision of a uterine leiomyoma and a right ovarian teratoma. Microscopic examination of the excisional biopsy revealed that the enucleated uterine tumor was composed of proliferating glandular tissue covered with single-layered cells that were surrounded by proliferating smooth muscle cells, corresponding exactly to the features of UATs. The excised ovarian cyst was confirmed to be a typical mature cystic teratoma. According to these histopathological findings, the patient was finally diagnosed with a UAT and coexisting teratoma. No recurrence was detected up to 6 months after excision. To the best of our knowledge, this is the eighth case report on laparoscopically enucleated UATs. Although recurrence risk may be low in UATs, further case reports are necessary to elucidate the safety and validity of laparoscopic excision for UATs.

DOI： 10.1272/jnms.84.139

PubMed

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記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

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記述言語：日本語   出版者・発行元：日本外科系連合学会  

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記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

researchmap

記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

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記述言語：日本語   出版者・発行元：(一社)日本病理学会  

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