具有混合组织学特征的肉类质性间皮瘤:诊断中的潜在陷
Allen P Burke1, Naomi Hardy2, Rachel Fanaroff3
1University of Maryland, Baltimore, MD UNITED STATES.
AJSP: reviews & reports
|August 4, 2023
概括
通过小小的活检来诊断瘤性间皮瘤是很困难的,因为细胞可能看起来平淡,缺乏典型标记物. 活检中CDKN2A的异构损失表明瘤过程,有助于诊断.
科学领域:
- 病理学 病理学 病理学
- 在瘤学瘤学.
- 细胞病理学 细胞病理学
背景情况:
- 肉类质性间皮瘤在小型活检样本上带来了诊断挑战.
- 有限的组织可以阻碍对入侵和细胞特征的最终评估.
- 病变细胞可能表现出平淡的细胞学和缺乏中体标记物表达.
研究的目的:
- 报告一例在重复肺部活检上诊断出的类半球瘤病例.
- 为了突出诊断在小型活检标本的挑战.
- 为了强调异合体CDKN2A损失在诊断类半质瘤中的重要性.
主要方法:
- 胰岛素和GATA的免疫组织化学3.
- 对于CDKN2A基因进行局部杂交.
- 胸腔活检样本的组织病理学分析.
主要成果:
- 最初的活检显示,平淡的状细胞具有负的中体标记物和异体的CDKN2A损失.
- 重复活检显示增加了多形,入侵和一致的异构体CDKN2A损失.
- 异卵性CDKN2A损失表明发生了瘤过程.
结论:
- 在小型活检上,类半质瘤可以表现为平淡的细胞学和焦点形.
- 异胞性CDKN2A的丧失是诊断瘤过程,如肉类瘤半质瘤的一个有价值的指标.
- 仔细评估活检材料和遗传标记对于准确诊断至关重要.
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