[Adenocarcinoma of the lung in a young adult].

We report a case of 24-year-old young man with lung adenocarcinoma. The patient had been treated malignant lymphoma when he was 5 years old. The patient was pointed out a tumor shadow of the right lung at his 2008 health check, but he did not receive further examination. He was again pointed out a same tumor at his 2009 health check. Plain chest computed tomography (CT) revealed a nodule in S8 of right lung. A diagnosis of lung adenocarcinoma was established by the cytology specimens obtained with bronchoscopic examination. The patient underwent right lower lobectomy with systematic lymph node dissection. Pathological stage was pT2N2M0 stage IIIA. Lung cancer patients aged under 30 years old are rare. Lung cancer should be considered even in young patients with abnormal chest shadows.