Abstract: Objective To analyze the characteristics of CT diagnosis in early pancreatic adenocarcinoma.Methods 34 pathologically confirmed cases of pancreatic cancer adenocarcinoma(22 Male cases, 12 Female cases, 63.7 years old on average)were all examined by CT diagnosis for the lesions′ size, shape, density and strength separately.Meanwhile, assessment of the situations, such as the expansion of pancreatic duct and bile duct, pancreas atrophy, metastasis and so on were carried out.The outcome of patients with pancreatic head lesion in 22 cases, 8 cases of pancreatic body, 4 cases of pancreatic tail.Lesion size ranges 15-60 mm, with an average of 35mm.23 cases of lesions strengthen unevenly.The outcome of plain scan with 5 isogram cases and 29 low density cases;11 low density cases and 4 isogram cases on arterial phase;8 low density cases and 7 isogram cases on portal phase.15 cases indicated bile duct expansion, and 23 cases indicated expansion of pancreatic duct.17 cases occured liver and peritoneal metastasis.Conclusion There is a certain degree of difficulty for CT scan diagnosis of small pancreatic adenocarcinoma on early stage.Optimization of scanning technology is the key to raise the level of diagnosis.

Key words: Pancreatic adenocarcinoma, Transaxial Tomography, X-ray computer