New era of emerging preoperative chemotherapy in gastrointestinal cancer.

This article discusses a JSGS paper published in the Annals of Gastroenterological Surgery. The paper focuses on the clinicopathological analysis of 460 cases of carcinoma of the ampulla of Vater (CAV) and identifies six prognostic factors. The study also explores the therapeutic strategy for CAV and suggests that preoperative chemotherapy may be the most effective treatment for aggressive CAV. The article also includes three other papers on preoperative chemotherapy in gastric cancer, colorectal cancer, and colon cancer, highlighting the potential benefits and challenges of this treatment approach. [Extracted from the article]