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Circulating biomarkers for lung cancer.

Ideal characteristics of tumor markers and their role in clinical practice are discussed. Measuring markers in screening programs resulted inefficient, while the pathological elevation of one or more markers may be virtually diagnostic of lung cancer in appropriate clinical setting. The elevation of CEA, NSE, TPA and other presented, appears particularly useful in the evaluation of the extent of disease, and may correlate with prognosis, as well as in postsurgical follow-up and monitoring therapy.