症例報告：類上皮性STUMPの極めて稀な症例
Danjie Li1, Yibei Guan1, Ziqiu He1
1Department of Obstetrics and Gynecology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Frontiers in oncology
|January 26, 2026
まとめ
悪性度の不明な類上皮性平滑筋腫（STUMP）は、子宮の稀な腫瘍である。本症例は、類上皮性STUMPの悪性腫瘍の可能性と、正確な診断と治療のための徹底した術前評価の重要性を強調するものである。
科学分野:
- 婦人科腫瘍学
- 病理学
- 腫瘍外科
背景:
- 子宮平滑筋腫は一般的な良性腫瘍である。
- 類上皮性STUMPは悪性腫瘍の可能性を秘めた稀な亜型である。
- 平滑筋腫における類上皮形態は、攻撃性の増加を示唆する。
研究 の 目的:
- 類上皮性STUMPの症例報告。
- 類上皮性STUMPの診断上の課題と悪性腫瘍の可能性を強調すること。
- 徹底した術前評価の重要性を強調すること。
主な方法:
- 異常子宮出血を呈した45歳女性の症例提示。
- 初期診断では、低悪性度の悪性子宮間葉系腫瘍が示唆された。
- 外科的治療には、子宮摘出術、付属器切除術、リンパ節生検が含まれた。
主要な成果:
- 術後病理検査により、浸潤性増殖を伴う類上皮性STUMPと確認され、悪性腫瘍の可能性が示唆された。
- 患者は、補助療法なしの手術から8ヶ月後の経過観察で再発は認められなかった。
- 腫瘍細胞は小型で、円形から紡錘形、軽度の異型性を示し、HPFあたり2-3個の有糸分裂像を認めた。
結論:
- 類上بري性STUMPは、誤診を避けるために、高度な画像診断（MRI、CT）を含む徹底した術前評価が必要である。
- 正確な診断は、適切な治療および予後戦略を確立するために不可欠である。
- 悪性腫瘍の可能性のある子宮腫瘍患者にとって、迅速な診断と管理が不可欠である。
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