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자료유형
학술저널
저자정보
저널정보
대한암학회 Cancer Research and Treatment Cancer Research and Treatment 제40권 제1호
발행연도
2008.1
수록면
16 - 21 (6page)

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Purpose: Carcinoembryonic antigen (CEA) is known to be elevated in nearly all solid malignancies. The prognostic role of CEA in gastric cancers however, is still controversial. We evaluated preoperative serum CEA levels and CEA expression from the resected tumor tissues to determine whether they have prognostic significance in gastric cancer patients. Materials and Methods: Medical records of 810 patients who underwent surgery for gastric adenocarcinoma from June, 1998 to February, 2002 in Kyungpook National University Hospital were reviewed. Serum CEA level was evaluated by radioimmunoassay preoperatively, and the cut-off level for positivity was 7.0 ng/ml. Labeled streptavidin-biotin peroxidase method was used to determine CEA expression from the gastric cancer tissues. Results: Serum and tissue CEA were positive in 9.3% and 91.1% of the patients, respectively. They had no correlation with each other. The positivity rate of serum CEA had positive correlation with invasion depth (p<0.001), lymph node metastasis (p<0.001), distant metastasis (p=0.006), and final stage (p<0.001). Well differentiated tumors showed higher serum CEA positivity (p=0.002). Patients with positive serum CEA had higher recurrence rate (p<0.001). Multivariate analysis showed significantly lower survival rate in patients with preoperative CEA levels over 7 ng/ml than those with lower levels (48.0% vs. 80.7%; p<0.001). The positivity rates of tissue CEA were higher in advanced cancers (p=0.033) and in more advanced stages (p=0.029). Tissue CEA positivity showed no correlation with recurrence or survival. Conclusions: Preoperative serum CEA level had correlation with disease progression and survival in gastric cancer patients, and proved to be an independent prognostic factor. Tissue CEA expression in gastric cancers had no prognostic information. (Cancer Res Treat. 2008; 40:16-21)

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