在胸膜上皮瘤和形态模仿中PAX1的表达
Paige H Parrack1, Jason L Hornick1, Lynette M Sholl1
1Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA, 02115.
Human pathology
|September 30, 2023
概括
帕克斯1免疫组织化学表现出适度至高的敏感性对于胸膜上皮瘤. 虽然不取代PAX8,但PAX1可能有助于诊断胸膜瘤,尽管有着色变异性和固定性挑战.
科学领域:
- 在瘤学瘤学.
- 病理学 病理学 病理学
- 免疫组织化学 免疫组织化学
背景情况:
- 胸膜上皮瘤由于形态多样性而存在诊断挑战.
- 目前的免疫组织化学 (IHC) 标志物对胸膜上皮缺乏完全的敏感性和特异性.
- PAX8是常用的,但不是完全特定的;PAX1在胸膜发育中起作用.
研究的目的:
- 评估PAX1免疫组织化学 (IHC) 在区分胸膜上皮瘤与形态模仿者的有用性.
- 评估PAX1 IHC在各种胸膜瘤和非胸膜模仿者的敏感性和特异性.
主要方法:
- 使用PAX1 IHC.分析了74例胸腺瘤病例和各种形态模仿的整片组织部分.
- 染色强度和模式在不同的胸膜瘤亚型和非胸膜瘤中进行了评估.
- 灵敏度和特异性是使用75的H分数正值值来计算的.
主要成果:
- PAX1抗体染色了所有74个胸腺瘤,但显示强度不同.
- 与胸膜瘤 (92%) 相比,胸膜癌 (47%) 和神经内分泌瘤 (56%) 的敏感性较低.
- 在模仿者的子集中观察到微弱的染色;在定义的值下,特异性为100%. 可变的甲固定影响了抗原性.
结论:
- PAX1 IHC对胸膜上皮瘤表现出中度至高度的敏感性.
- 染色变异性和固定效应可能会使一致的解释变得复杂.
- PAX1可以作为现有的IHC面板的宝贵补充,用于胸膜原发性瘤,而不是一个独立的标志物.
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