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Isolated Tumor Cells and Circulating CK20 mRNA in pN0 Colorectal Cancer Patients
Cesar Sze-Chuen Wong*,
Mong-Tong Cheung,
Brigette Buig-Yue Ma,
Edwin Pun Hui,
Alex Chak-Lam Chan,
Chi-Kin Chan,
King-Chung Lee,
Wah Cheuk,
Money Yan-Yee Lam,
Manson Chi-Keung Wong,
Charles Ming-Lok Chan,
John Kwok-Keung Chan,
and
Anthony Tak-Cheung Chan
* To whom correspondence should be addressed. E-mail: cesar01{at}netvigator.com.
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Abstract |
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Micrometastases in lymph nodes and blood may provide important prognostic information. In this study, cytokeratin 20 (CK20) positive cells in lymph nodes and circulating CK20 mRNA were studied using 57 paraffin-embedded lymph node specimens and blood from 24 patients with pN0 colorectal cancer (CRC), respectively. Results showed that 29 out of 56 (52%) lymph node specimens had CK20-positive cells (range: 1-35). Follow-up of the patients for 12 months indicated that 4 patients (7%) had CRC metastases to liver, lung, and bone. In addition, 8 out of 24 (33%) samples had at least 2-fold circulating CK20 mRNA expression higher than the pooled normal sample. This study provides evidence that CK20-positive cells were found in the lymph nodes and differentially expressed circulating CK20 mRNA was also detected in the blood from patients with pN0 CRC. Long-term follow-up is necessary to study their prognostic use in patients with non-metastatic CRC.
First published on April 2, 2008, doi:10.1177/1066896907311901
International Journal of Surgical Pathology 2008;16:119.
A more recent version of this article appeared on April 1, 2008

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G. D'Armento, L. Daniele, S. Mariani, D. Ottaviani, A. Mussa, P. Cassoni, A. Sapino, and G. Bussolati
Added Value of Combined Gene and Protein Expression of CK20 and CEA in Non--macroscopically Involved Lymph Nodes of Colorectal Cancer
International Journal of Surgical Pathology,
April 1, 2009;
17(2):
93 - 98.
[Abstract]
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