Small Cell Lung Cancer (SCLC) is an aggressive disease that accounts for 14% of all lung cancers. It is known that the risk of developing a second primary tumor is high in cured SCLC. Here, we aimed to present metachronous cancer that developed in the contralateral lung at the 11th year in our case of small cell lung cancer, which was fully cured. A 52-year-old female patient at the time of diagnosis received chemoradiotherapy with a diagnosis of limited-stage small cell lung cancer in the left lung 14 years ago. At the 11th year of follow-up, segmentectomy was performed because of the detection of Stage1 lung adenocarcinoma in the contralateral lung. She is in the 3rd year postoperatively without any problems. Patients with long survival should be carefully evaluated for metachronous lung cancer in their controls. It should not be forgotten that curative treatment of second primary tumors that can be detected in the early period will positively affect the survival of patients.