Gastric cancer is the fifth most common type of cancer in the world and the third leading cause of cancer death. Conventional treatment for gastric cancer includes surgical resection and adjuvant therapy. More than 50% of patients are reaching the advanced stage when diagnosed, because they do not have typical symptoms at early stage. Researchers continue to investigate more sensitive methods for detecting the occurrence and development of gastric cancer. In addition to new serum tumor biomarkers through proteomics, new concept such as circulating tumor DNA (ctDNA) has also been introduced. This article reviewed the clinical application of ctDNA in diagnosis of gastric cancer.

Foreign Language Department of Kunming Medical University has developed medical English self-access learning platform based on campus network, created medical English online courses and network resource library , established major oriented learning evaluation mechanism . It provides an online teaching, learning, practice, testing and evaluation environment for college teachers and students. The architecture of the platform takes medical specialty into consideration, which focuses on the training of students' English skills. The detailed design of the platform is presented. The platform was launched in September 2014. Performance testing is used to measure the ability of the system. Three methods including students' interview, the interaction between the teaching management staff and quantitative analysis are adopted to evaluate the application results . Finally this paper has preliminarily explored self-access learning modes available for students. According to the related information, the platform runs smoothly after it was put into use and improves students' learning ability of medical English to a certain extent.