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- W1997271377 abstract "In a recent issue, Saito and colleagues1Saito Y. Omiya H. Kohno K. Kobayashi T. Itoi K. Teramachi M. et al.Pulmonary metastasectomy for 165 patients with colorectal carcinoma a prognostic assessment.J Thorac Cardiovasc Surg. 2002; 124: 1007-1013Abstract Full Text Full Text PDF PubMed Scopus (284) Google Scholar reported on a multicenter retrospective review of surgery for pulmonary metastasis from colorectal cancer. They concluded that the status of the hilar or mediastinal lymph nodes and prethoracotomy carcinoembryonic antigen (CEA) level were significant independent prognostic factors. I believe these findings are useful in the follow-up of patients who have undergone resection of pulmonary metastasis of colorectal cancer. Prethoracotomy serum CEA levels are also a prognostic indicator in non–small cell lung cancer when the cutoff level is defined as 6. 9 ng/dL on the basis of the 95% specificity level for benign lung disease.2Sawabata N. Ohta M. Takeda S. Hirano H. Okumura Y. Asada H. et al.Serum carcinoembryonic antigen level in surgically resected clinical stage I patients with non–small cell lung cancer.Ann Thorac Surg. 2002; 74: 174-179Abstract Full Text Full Text PDF PubMed Scopus (95) Google Scholar There are many kits to measure serum CEA levels. The antibodies used by the various methods vary. Thus there are some cross-reactive normal antigens that are calculated by some kits, and the maximum normal serum level of CEA ranges from 2.5 ng/dL to 6.9 ng/dL.3Kuroki M. Haruno M. Arakawa F. Wakisaka M. Matsuoka Y. Reaction profiles of seven enzyme immunoassay kits for carcinoembryonic antigen (CEA) analysed with purified preparations of CEA and related normal antigens.Clin Biochem. 1992; 25: 29-35Crossref PubMed Scopus (20) Google Scholar In the study that Saito and colleagues1Saito Y. Omiya H. Kohno K. Kobayashi T. Itoi K. Teramachi M. et al.Pulmonary metastasectomy for 165 patients with colorectal carcinoma a prognostic assessment.J Thorac Cardiovasc Surg. 2002; 124: 1007-1013Abstract Full Text Full Text PDF PubMed Scopus (284) Google Scholar conducted, 10.0 ng/dL was used as a cutoff level that influenced the prognosis. This level is from 1.4 times to 4 times the upper limit of normal for serum CEA level. In a multicenter study, the variable for serum CEA level should be considered normal or high according to a cutoff level established by each individual institution. Otherwise, the specification of a single type of kit to measure serum CEA levels is needed when a specific serum CEA level is defined as the cutoff level. Either method, I believe, will make serum CEA levels a more significant prognostic indicator for patients with lung cancer or patients with pulmonary metastases from colorectal cancer. Reply to the EditorThe Journal of Thoracic and Cardiovascular SurgeryVol. 125Issue 6Preview Full-Text PDF" @default.
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- W1997271377 date "2003-06-01" @default.
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- W1997271377 title "Problems in assessment of serum carcinoembryonic antigen levels in cancers" @default.
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- W1997271377 doi "https://doi.org/10.1016/s0022-5223(03)00228-9" @default.
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