Objective: The aim of this study was to investigate the sociodemographic, clinical, radiological, histopathological, and survival characteristics of lung cancer patients ≤55 years of age. Methods: The files of patients diagnosed in the clinic as lung cancer between January 2014 and December 2016 were retrospectively evaluated. These cases were divided into 2 groups: patients who were ≤55 years of age and patients >55 years of age. The clinical, radiological, and demographic findings; histopathological type and stage of cancer; treatment modalities used; and survival data were analyzed and compared. Results: A total of 323 cases, 85 (26.3%) of them aged ≤55 years and 238 (73.7%) aged >55 years, were included in the study. The stage and histopathological type of lung cancer, smoking history, gender, oncological and surgical treatment modalities used, and survival characteristics were similar in both groups (p>0.05).Conclusion: Since the 2 groups of lung cancer patients formed on the basis of the age limit of 55 years were similar in many respects, and because the number of cancer cases increases in 5-year subgroups under the age of 55 years, screening for lung cancer may be recommended for those under 55 years, especially in cases with risk factors
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