ObjectiveTo analyze the CT features of solid pseudopapillary tumor of pancreas (SPTP). MethodsEight patients with SPTP received triple phasic contrast-enhanced CT, and its consistency with pathological findings was analyzed. ResultsSPTP manifested as a solitary and exogenous mass, with a heterogeneous pattern composed of solid and polycystic parts. The shape of SPTP was spherical in four patients, oval in two patients, and shallow lobulation in another two patients. In contrast-enhanced phase images, the solid parts showed mild to moderate enhancement in both arterial and portal phases. Complete capsule was showed in seven patients, and nodules were found in the wall of mass in five patients. Hemorrhage was seen in two patients and calcification was showed in five patients. The dilation of pancreatic duct was found in one patient, liver metastases was showed in one patient, and the invasion of tumor to posterior gastric wall was found in one patient. Pseudopapillary structure, hemorrhage, necrosis, and cystic degeneration were showed in all patients by histological study. ConclusionSPTP has certain characteristic CT imaging manifestations consistent with histological features, which is helpful for the diagnosis and differential diagnosis of SPTP.
