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免疫组织化学在细胞学渗出液中鉴别反应性间皮细胞与恶性间皮瘤。

The use of immunohistochemistry to distinguish reactive mesothelial cells from malignant mesothelioma in cytologic effusions.

机构信息

Department of Pathology, University of California-San Diego Medical Center, 200 W. Arbor Drive, La Jolla, CA 92103, USA.

出版信息

Cancer Cytopathol. 2010 Apr 25;118(2):90-6. doi: 10.1002/cncy.20071.

DOI:10.1002/cncy.20071
PMID:20209622
Abstract

BACKGROUND

The distinction of benign from malignant mesothelial proliferations in cytologic specimens can be problematic. In this study, the authors investigated the utility of immunohistochemical (IHC) markers in making this distinction.

METHODS

Archival paraffin-embedded cell blocks of pleural and peritoneal fluids from 52 patients with malignant mesothelioma (MM) and 64 patients with reactive mesothelial hyperplasia (MH) were retrieved. IHC stains included desmin, epithelial membrane antigen (EMA), glucose-transport protein 1 (GLUT-1), Ki67, and p53.

RESULTS

Desmin was positive in 84% (54 of 64) cases of reactive MH and in 6% (3 of 52) of MM cases (P < .001). EMA was positive in 9% (6 of 64) of benign and 100% (52 of 52) of malignant cases (P < .001). GLUT-1 was positive in 12% (5 of 43) of benign and 47% (7 of 15) of malignant cases. Ki67 showed strong nuclear positivity in >40% of mesothelial cells in 9% (6 of 64) of benign and 16% (8 of 49) of malignant cases (P = .38). p53 showed strong nuclear positivity in 2% (1 of 46) of benign and 47% (7 of 15) of malignant cases (P < .001). EMA positivity and desmin negativity were found in 2% (1 of 64) of reactive MH cases and 98% (49 of 52) of MM cases (P < .001). EMA negativity and desmin positivity were found in 86% (55 of 64) of reactive MH cases and 0% of MM cases.

CONCLUSIONS

The combination of positive EMA and negative desmin strongly favors MM; conversely, a combination of negative EMA and positive desmin favors a reactive process. Likewise, strong membranous positivity for GLUT-1 and/or strong nuclear staining for p53 favors a mesothelioma. Ki67 proliferative index showed no significant difference between reactive MH and MM cases.

摘要

背景

在细胞学标本中,良性与恶性间皮增生的鉴别可能存在问题。本研究旨在探讨免疫组织化学(IHC)标志物在这一鉴别诊断中的应用价值。

方法

本研究回顾性分析了 52 例恶性间皮瘤(MM)和 64 例反应性间皮增生(MH)患者的存档石蜡包埋细胞块。免疫组化染色包括结蛋白(desmin)、上皮膜抗原(EMA)、葡萄糖转运蛋白 1(GLUT-1)、Ki67 和 p53。

结果

结蛋白在 84%(64 例中的 54 例)反应性 MH 病例和 6%(52 例中的 3 例)MM 病例中呈阳性(P<0.001)。EMA 在 9%(64 例中的 6 例)良性病例和 100%(52 例中的 52 例)恶性病例中呈阳性(P<0.001)。GLUT-1 在 12%(43 例中的 5 例)良性病例和 47%(15 例中的 7 例)恶性病例中呈阳性。Ki67 在 9%(64 例中的 6 例)良性病例和 16%(49 例中的 8 例)恶性病例中,有超过 40%的间皮细胞呈强核阳性(P=0.38)。p53 在 2%(46 例中的 1 例)良性病例和 47%(15 例中的 7 例)恶性病例中呈强核阳性(P<0.001)。在 2%(64 例中的 1 例)反应性 MH 病例和 98%(52 例中的 49 例)MM 病例中发现 EMA 阳性和结蛋白阴性(P<0.001)。在 86%(64 例中的 55 例)反应性 MH 病例和 0%的 MM 病例中发现 EMA 阴性和结蛋白阳性。

结论

EMA 阳性和结蛋白阴性强烈提示 MM;相反,EMA 阴性和结蛋白阳性提示反应性过程。同样,GLUT-1 的强膜阳性和/或 p53 的强核染色提示间皮瘤。Ki67 增殖指数在反应性 MH 和 MM 病例之间无显著差异。

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