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Tuberc Respir Dis > Volume 42(3); 1995 > Article
Tuberculosis and Respiratory Diseases 1995;42(3):322-331.
DOI: https://doi.org/10.4046/trd.1995.42.3.322    Published online September 16, 2015.
Diagnostic Usefulness of Simultaneous Measurement ofSerum Tumor Markers in Lung Cancer Patients.
Tae Won Jang, , Man Hong Jung,
Department of Internal Medicine, Kosin Medical Center, Pusan, Korea.
Abstract
INTRODUCTION: This study was performed to evaluate the diagnostic usefulness of simultaneous determination of 3 tumor markers {serum carcinoembryonic antigen(CEA), squamous cell carcinoma antigen (SCC Ag) and neuron specific enolase(NSE)} in lung cancer patients. METHOD: In 113 patients with primary lung cancer(70 with squamous cell carcinoma, 30 with adenocarcinoma, 13 with small cell carcinoma) and 103 patients with benign lung diseases, serum CEA and NSE were measured by enzyme immunoassay, and SCC Ag was measured by microparticle enzyme immunoassay. RESULTS: 1) The mean serum levels of 3 tumor markers were significantly higher in lung cancer groups than benign lung disease groups respectively(p=0.001). 2) In squamous cell carcinoma, the SCC Ag was elevated in 67%, in adenocarcinoma CEA was elevated in 77% and in small cell carcinoma NSE was elevated in 77%, but there were no significant differences according to the stage of each cancer cell types. 3) CEA was the most sensitive marker, but nonspecific to cancer types. SCC Ag was less sensitive than other markers, but more specific toward squamous cell carcinoma, and NSE was more specific to primary lung cancer. 4) As the number of positive tumor markers was increased, the relative possibility of lung cancer was also increased. If two markers were positive, it increased to 77%, and if three markers were positive it increased to 90%. CONCLUSION: The simultaneous measurement of serum CEA, SCC Ag and NSE would provide additional information for the diagnosis of lung cancer.
Key Words: CEA, SCC Ag, NSE, Lung Cancer


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