Journals / İzmir Tepecik Eğitim Hastanesi Dergisi / 2015 / Cilt: 25 - Sayı: 1

Primer ve metastatik karaciğer tümörlerinde sitokeratin 7/20 ekspresyonunun tanısal değeri

Diagnostic value of cytokeratin 7/20 expression in primary and metastatic liver tumors

Pages
49–54
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Conclusion: In conclusion, our study shows that cytokeratin 7/20 phenotype has diagnostic value in the differential diagnosis of primary and metastatic liver tumors.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Analyzing the expression of cytokeratin 7 and 20 plays an important role in the discrimination between primary and metastatic liver tumors.
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Key Findings & Data:The cytokeratin 7/20 phenotype of tumors is one of the most frequently used criterion for differential diagnosis.
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Conclusion & Impact:Conclusion: In conclusion, our study shows that cytokeratin 7/20 phenotype has diagnostic value in the differential diagnosis of primary and metastatic liver tumors.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Analyzing the expression of cytokeratin 7 and 20 plays an important role in the discrimination between primary and metastatic liver tumors. The cytokeratin 7/20 phenotype of tumors is one of the most frequently used criterion for differential diagnosis. Methods: In 72 liver specimens (59 resection material and 13 core needle biopsies) evidence of intrahepatic cholangiocarcinoma (n=25), colorectal adenocarcinoma metastases (n=28), 13 pancreaticobiliary adenocarcinoma (n=13), gastric adenocarcinoma metastases (n=4), lung adenocarcinoma metastasis, (n=1), and breast carcinoma metastasis ((n=1) were investigated In all cases location of the primary focus was determined. Immunohistochemical analysis was performed with two monoclonal cytokeratin antibodies, cytokeratin 20 and cytokeratin 7 which were tested in 72 tumor sections. Results: The positivity rate and intensity of immunostaining were evaluated. Cytokeratin 7(+)/20(-) phenotype was seen in 76% (19/ 25) of the cases with intrahepatic cholangiocarcinoma with 89% specificity, 76% sensitivity and 79% positive predictive value. The cytokeratin 7(+)/20(+) phenotype was detected in 69% (9/13) of the cases with pancreaticobiliary adenocarcinomas with 76.3% specificity, 69.2% sensitivity, and 39.1% positive predictive value. The cytokeratin 7(-)/20(+) phenotype was observed in 82% (23/28) of the cases with colorectal adenocarcinoma metastases with 97.7% specificity, 82.1% sensitivity, and 95.8% positive predictive value. Conclusion: In conclusion, our study shows that cytokeratin 7/20 phenotype has diagnostic value in the differential diagnosis of primary and metastatic liver tumors.

Özet

Amaç: Primer ve metastatik karaciğer tümörlerinin tanısında sitokeratin 7 ve 20 ekspresyon analizinin önemli rolü vardır. Tümörlerde sitokeratin 7/20 fenotipi ayırıcı tanılarda en sık kullanılanlardan biridir. Yöntemler: Yirmi beş intrahepatik kolanjiokarsinom, 28 kolorektal adenokarsinom metastazı, 13 pankreatikobilier adenokarsinom, 4 gastrik adenokarsinom metastazı, 1 akciğer adenokarsinom metastazı, 1 meme karsinom metastazını içeren 72 karaciğer materyali (59 rezeksiyon materyali ve 13 iğne biyopsi) araştırıldı. Tüm olgularda primer tümör lokalizasyonu belirlendi. İmmunohistokimyasal çalışma 72 tümörlü kesitte sitokeratin 7 ve 20 monoklonal antikorları ile yapıldı. Bulgular: İmmun pozitiflik oranı ve boyanma yoğunluğu değerlendirildi. Sitokeratin 7(+)/20(-) fenotipi intrahepatik kolanjiokarsinom olgularının %76’sında (19/25), %76 duyarlılık, %89 seçicilik ve %79 pozitif tahmin değerleri ile saptandı. Sitokeratin 7(+)/20(+) fenotipi 13 pankreatikobilier adenokarsinomun 9’unda (%69) saptandı. Seçicilik %76,3, duyarlılık %96,2 ve pozitif tahmin değeri %39,1 olarak bulundu. Sitokeratin 7(-)/20(+) fenotipi ise kolorektal adenokarsinom metastazı olgularının %82’sinde (23/28) saptandı (seçicilik %97,7, duyarlılık %82,1, pozitif tahmin değeri %95,8). Sonuç: Sonuç olarak çalışmamız, sitokeratin 7/20 fenotipinin primer ve metastatik karaciğer tümörlerinin ayırıcı tanısında önemli yeri olduğunu göstermektedir.

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Cite This Article

NART, D., YAMAN, B., KARAARSLAN, S., ZEYTUNLU, M., KILIÇ, M., ÇOKER, A., BARBET, F. Y. (2015). Primer ve metastatik karaciğer tümörlerinde sitokeratin 7/20 ekspresyonunun tanısal değeri. İzmir Tepecik Eğitim Hastanesi Dergisi, Cilt: 25 - Sayı: 1, 49–54. https://ajindex.com/articles/268103

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