Abstract：Objective: To analyze the findings of isoattenuating pancreatic adenocarcinoma on multi-slice spiral CT(MSCT) and evaluate the value of curved planar reformations(CPR) in diagnosis. Methods: The CT findings of 62 pancreatic adenocarcinoma proved by surgery or clinical materials were analyzed retrospectively. The contrast relative to pancreas was observed on the basis of visual inspection during nonenhanced and biphasic enhanced scanning. CPR were generated along pancreatic duct and common bile duct. Results: Of 62 patients, 5(8.1%) had isoattenuating tumors on the basis of visual inspection during nonenhanced and biphasic enhanced scanning. The secondary signs of the five patients included an “interrupted pancreatic duct” sign(n=5), “double duct” sign(n=4), contour abnormality of the pancreatic head(n=4), and atrophic distal pancreatic parenchyma(n=1). The remaining 57 patients had visible hypoattenuating tumors on enhance CT. Conclusion: A small number of pancreatic adenocarcinomas were deemed isoattenuating on the basis of visual inspection, indirect signs such as “interrupted pancreatic duct” sign, “double duct” sign, and contour deformity of the pancreas are important indicators for the presence of tumor. CPR help to display the whole view of pancreas, pancreatic duct and common bile duct, and help to confirm the presence of tumor.
2007, Vol. 18 
