Carcinoma, Non-Small-Cell Lung/metabolism; Chordoma/metabolism; Lung Neoplasms/metabolism; Neoplasms, Second Primary/metabolism; Proto-Oncogene Proteins c-kit/metabolism; Receptor, Platelet-Derived Growth Factor alpha/metabolism; Receptor, Platelet-Derived Growth Factor beta/metabolism; Benzamides; Carcinoma, Non-Small-Cell Lung/diagnosis; Carcinoma, Non-Small-Cell Lung/drug therapy; Chemotherapy, Adjuvant; Chordoma/drug therapy; Chordoma/pathology; Disease Progression; Humans; Imatinib Mesylate; In Situ Hybridization, Fluorescence/methods; Lung Neoplasms/diagnosis; Lung Neoplasms/drug therapy; Male; Middle Aged; Neoplasm Recurrence, Local/drug therapy; Neoplasm Recurrence, Local/metabolism; Neoplasms, Second Primary/diagnosis; Neoplasms, Second Primary/drug therapy; Piperazines/pharmacology; Piperazines/therapeutic use; Proto-Oncogene Proteins c-kit/drug effects; Proto-Oncogene Proteins c-kit/genetics; Pyrimidines/pharmacology; Pyrimidines/therapeutic use; Receptor, Platelet-Derived Growth Factor alpha/drug effects; Receptor, Platelet-Derived Growth Factor alpha/genetics; Receptor, Platelet-Derived Growth Factor beta/drug effects; Receptor, Platelet-Derived Growth Factor beta/genetics; Sensitivity and Specificity