Broadly speaking, pancreatic cancer is a malignant tumor cancer that occurs near the cardia, a concept that is gradually being replaced by the concept of carcinoma of the gastroesophageal junction.
The current definition of carcinoma of the gastroesophageal junction is adenocarcinoma with the center of the tumor located within 5 cm above and below the gastroesophageal junction and the tumor accumulates the gastroesophageal junction. According to Siwert’s staging, there are 3 types: type I refers to cancer invading the esophagogastric junction line and the center of the cancer is between 5 cm and 1 cm above the junction line; type II refers to cancer invading the esophagogastric junction line and the center of the cancer is between 1 cm above and 2 cm below the junction line; type III refers to cancer invading the esophagogastric junction line and the center of the cancer is between 2 cm and 5 cm below the junction line.
Different staging standards of gastroesophageal junction cancer are different. Type I is staged according to the standard of lower and middle esophageal cancer, while types II and III are staged according to the standard of gastric cancer. Symptoms mainly include posterior sternal distension or slight pain, choking sensation when swallowing food, distension and fullness in chest and abdomen, nausea, vomiting, emaciation and corresponding symptoms caused by advanced spread and metastasis to surrounding tissues and organs.
For treatment of combined gastroesophageal cancer, type I is treated according to the standard of lower and middle esophageal cancer, while types II and III are treated according to the standard of gastric cancer.