Diagnosis and treatment of chronic pancreatitis with mass in the head of the pancreas ZHANG Zhong-tao, YIN Jie.Department of General Surgery, Beijing Friendship Hospital Affiliated to Capital University of Medical Sciences, Beijing 100050, China Corresponding author: ZHANG Zhong-tao, E-mail: zhangzht@medmail. com.cn Abstract Chronic pancreatitis (CP) with mass and pancreatic cancer are difficult to identify from the Clinical performance. At present, we have the CP with mass as a precancerous lesion of pancreatic cancer. Imaging methods in the diagnosis of the CP with mass plays an important role, which is very helpful for the Indications for surgery of the hands, of resectable pancreatic head tumor, and surgical options, as well as estimates of the difficulty of the surgery. Surgical strategy in CP with mass has been directed at the pancreatic head with a variety of tactics including pancreatoduodenectomy(Whipple procedure with or without pylorus preservation) and partial resection of the pancreatic duct drainage(Frey operation, Beger operation ). Once the diagnosis of the CP with mass should be clear that the surgical treatment, pancreatoduodenectomy is preformed in the treatment of CP with mass, not only resection of the pancreatic head mass, the lifting of the bile duct and pancreatic duct and obstruction of the duodenum, but also in addition to the potential causes of pancreatic cancer. Pancreatoduodenectomy is great risk When the great mass of pancreatic head, but the partial head resection can be accomplished with relative safety.