Analysis of MSCT imaging of the solid pseudopapillary tumor of pancreas in 9 cases

Objective: To analyze the CT imaging of the solid pseudopapillary tumor of pancreas(SPTP) so as to improve its diagnosis and differential diagnosis.Methods: The CT and MSCT imaging characteristics of 9 cases with SPTP diagnosed by pathology were retrospectively analyzed.Results: Among the 9 cases with SPTP,5 cases in pancreatic head(55.6%),2 cases in pancreatic neck(22.2%),1 case in pancreatic body(11.1%) and 1 case in pancreatic tail(11.1%) were found.The CT imaging showed that the tumor was round or oval low density solid or solid-cystic mass with clear boundary,calcification in 2 cases,strip calcification under amicula in 1 case and punctate calcification in tumor centre in 1 case were found.The tumors in all cases were wrapped by fiber amicula.The delayed reinforcement with persistently slight enhanced features(floating cloud symptom) in solid part of tumor was showed by enhanced CT scan,no obvious enhancement in the cystic part of tumor and obvious enhancement in fiber amicula were found.The lymph nodes enlarging or metastasis in all cases were not be found.Conclusions: The CT imaging of SPTP has certain characteristics,and multi-phase enhanced scan can improve its diagnosis and differential diagnosis.