The expression of resistin in lung adenocarcinoma tissues and its association with survival. (A) Immunohistochemical staining of lung adenocarcinoma tissues with a resistin antibody. The low and high expression of resistin in lung adenocarcinoma tissues are presented (magnification, ×100). High resistin expression indicated poor prognosis in lung adenocarcinoma patients. (B) PFS a curves of 70 patients with different level of resistin expression are presented. The PFS curves of age, smoking, tumor size, lymph node metastasis and clinical stage are presented. (C) OS curves of 70 patients with different level of resistin expression are presented. The OS curves of age, smoking, tumor size, lymph node metastasis and clinical stage are presented. PFS, progression-free survival; OS, overall survival; Cum, cumulative; (−) and (+), low expression group, (++) and (+++), high expression group.