Objective: To evaluate the diagnostic value of endobroncheal ultrasonography-transbronchial needle aspiration (EBUS-TBNA) in pulmonary and mediastinal tumors.
Purpose: We performed meta-analysis to examine whether gemcitabine plus S-1 (GS) could improve treatment efficacy as first-line chemotherapy for unresectable advanced pancreatic cancer (UAPC) as compa