脂肪の周回性ミクソイド偽腫瘍:基礎腎臓疾患との不一致な関連を示す29症例のシリーズ
Azfar Neyaz1, John S A Chrisinger2, Dimitrios Korentzelos1
1Department of Pathology.
The American journal of surgical pathology
|September 4, 2025
まとめ
脂肪の周回性ミクソイド仮腫瘍 (PMPTF) は,リポサルコマを模倣する良性病変である. この研究では,PMPTFは腎臓疾患なしに発生することが示され,代替的な原因を示唆し,その非新生性性を支持しています.
科学分野:
- 病理学について
- 腫瘍学
- 生殖器尿路の病理
背景:
- 脂肪の周回性ミクソイドシズド腫瘍 (PMPTF) は,腎臓疾患としばしば関連している希少な病変です.
- その正確な原因と腎臓病理学的関連は不明である.
- 以前の研究では 慢性腎臓刺激が 原因である可能性が示されています
研究 の 目的:
- 質量形成型PMPTFの臨床的,組織学的,分子学的特徴を調査する.
- PMPTFと基礎となる腎臓病理学の関連性を決定する.
- PMPTFのゲノムプロファイルと診断への影響を評価する.
主な方法:
- 29件のPMPTF事例を多機関で遡及的に調査した.
- 公開された79件の事例を,より広範な文脈で検討した.
- ヒストロジックと免疫ヒスト化学分析
- FISHはMDM2の増幅のために
- 次世代配列化 (NGS) と全トランスクリプトーム配列化
主要な成果:
- PMPTFは腎臓の病変がある患者とない患者で発生した (31%は腎臓の病変はなかった).
- ヒストロジーは成熟した脂肪と 淡い糸状の細胞,炎症と 菌糸状の変化を示した.
- MDM2増幅や病原性ゲノム変異は検出されなかった.
- ほとんどの症例は診断後に安定した疾患を示し,再発の証拠はありませんでした.
結論:
- PMPTFは悪性腫瘍,特にリポサルコマを模倣する良性である.
- 腎臓の病理性がないことから,別の原因が示唆される.
- ゲノム変異の欠如は,非新生性,おそらく反応性,自然を支えている.
- 過剰な治療を避けるには 正確な診断が不可欠です
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