A 67-year-old man with small cell lung cancer was referred to our department. The patient had received chemotherapy for lung cancer and complained of no specific symptoms. Follow-up positron emission tomography (PET) showed a new duodenal lesion. Immunohistochemistry (IHC) with the specimens obtained by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) showed that the lesion was metastasis from lung cancer. These results ... إقراء المزيد