Objective: To explore the correlation between imaging features of solid-pseudopapillary tumor of pancreas (SPTP) and their pathological findings.
Methods: Analyze the imaging of 19 patients (female 15, male 4, median age 25 years) who underwent surgery for SPTP, and divide their into solid-predominance type, solid-cyst type and cyst-predominance type to compare with their pathological specimens. All patients plain and enhanced CT examination and plain and enhanced MR examination.
Results: (1) 2 cases of solid-predominance type (11%), 13 cases solid-cyst type (68%), 4 cases of cyst-predominance type (21%). Cyst are located in the surrounding area of solid-predominance type; Solid and cyst are mixed in cyst-solid type; cyst-predominance type are thick-walled cystic tumors with nodules. (2) 12 cases (63%) show obvious signs of haemorrhage and 4 cases (21%) had calcification on CT; All cases (100%) which on MR can be seen signs of haemorrhage. (3) Pathological findings demonstrate SPTP have two ingredients: solid and cystic. However, the two ingredients occupy different ratio in different types. Haemorrhage are seen in all of tumors.
Conclusion: As a sort of neoplasm which preferentially arising in SPTP occur in pancreas of young women, its different types of imaging features related to their pathological findings.