Objective To analyze retrospectively the clinical manifestation, stages, therapy methods and lifetime of senile patients with lung cancer.

To evaluate the value of detective system (C-12) of multiple tumor markers protein biochip for clinical staging, pathologic classification and prognostic evaluation in lung cancer.

Conclusions Senile patients with lung cancer demonstrated atypical symptoms and their prognosis and lifetimes are related to clinical stages and histological styles with no relation to ages.