Editorial
Molecular classification of gastric cancer
Abstract
Gastric cancer is the world’s third leading cause of cancer mortality and the most common cancer diagnosed in men in Japan (1). Clinical work-up of gastric cancer relies in part on imaging modalities, including endoscopic ultrasound and CT/PET, and pathologic analysis of tumor biopsies. Gastric cancer is clinically classified as early or advanced stage, with early disease confined to mucosa/submucosa and advanced carcinoma invading into muscularis propria and beyond (2).