01 May 2004
Identifying colorectal metastases in liver biopsies: the novel CDX2 antibody is less specific than the cytokeratin 20+/7– phenotype
Tibor TotMed Sci Monit 2004; 10(5): BR139-143 :: ID: 11656
Abstract
Background:Immunohistochemistry plays an important role in tracing the primary site in metastatic tumors of unknown origin. Therefore, determining the cytokeratin (CK) 20/CK7 pattern of metastases is one of the most helpful procedures as the CK20+/CK7– pattern is typical of colorectal adenocarcinomas. Expression of CDX2 protein is a new, highly specific and sensitive marker of the intestinal origin of adenocarcinomas. In the present study we compared the sensitivity and specificity of CDX2 expression and the CK20+/CK7– phenotype in predicting the colorectal origin of liver metastases.Material/Methods: The study was carried out on a consecutive series of 125 core-needle biopsies of metastatic adenocarcinomas of the liver. Most of the patients were followed up to death, and primary tumor localization could be established in 102 cases by a combination of clinical, radiological, histological and, in some cases, autopsy data. All the needle biopsies were immunohistochemically stained for CK7, CK20 and CDX2. CDX2 expression (at 10% and 50% cut-off levels) and the CK20/CK7 pattern of the metastases were correlated to the primary site established.Results: The CK20+/CK7– pattern showed a specificity of 98.7% in predicting colorectal primary localization, which was superior to that of CDX2 expression at both cut-off levels (90% and 95.3% respectively). The sensitivity of CDX2 expression in these circumstances was 84% at the 10% cut-off, somewhat higher than that of the CK20+/CK7– phenotype (79.5%), but lower at the 50% cut-off level (72.7%).Conclusions: The CK20+/CK7– immunophenotype is more specific in predicting the colorectal origin of liver metastasis than CDX2 expression.
Keywords: Adenocarcinoma - metabolism, Intermediate Filament Proteins - biosynthesis, Adenocarcinoma - pathology, Aged, 80 and over, Antibodies - chemistry, Colorectal Neoplasms - pathology, Homeodomain Proteins - immunology, Immunophenotyping, Intermediate Filament Proteins - biosynthesis, Keratin-20, Keratin-7, Keratins - biosynthesis, Liver Neoplasms - secondary, Phenotype, Sensitivity and Specificity, Trans-Activators
Editorial
01 May 2024 : Editorial
Editorial: First Regulatory Approval for Adoptive Cell Therapy with Autologous Tumor-Infiltrating Lymphocytes (TILs) – Lifileucel (Amtagvi)DOI: 10.12659/MSM.944927
Med Sci Monit 2024; 30:e944927
In Press
15 Mar 2024 : Clinical Research
Impact of Cluster Nursing Intervention on ICU Patients' Psychological Well-Being and Complications Associat...Med Sci Monit In Press; DOI: 10.12659/MSM.942855
26 Mar 2024 : Clinical Research
New Computerized Planning Algorithm and Clinical Testing of Optimized Nuss Bar Design for Patients with Pec...Med Sci Monit In Press; DOI: 10.12659/MSM.943705
07 May 2024 : Clinical Research
Treatment of AVN-Induced Proximal Pole Scaphoid Nonunion Using a Fifth and Fourth Extensor Compartmental Ar...Med Sci Monit In Press; DOI: 10.12659/MSM.944553
16 Mar 2024 : Clinical Research
Diagnostic Efficiency of ACR-TIRADS Score for Differentiating Benign and Malignant Thyroid Nodules of Vario...Med Sci Monit In Press; DOI: 10.12659/MSM.943228
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952