ĐẶC ĐIỂM HÌNH ẢNH CHỤP CẮT LỚP VI TÍNH CỦA U ĐẶC GIẢ NHÚ TỤY KÍCH THƯỚC NHỎ (≤ 3 CM)

Abstract

SUMMARY

Background: Solid pseudopapillary tumor (SPT) of the pancreas, is an exocrine pancreatic tumor, a low - grade malignant tumor, a rare neoplasm accounting for only 1–2,5% of all pancreatic tumors. In particular, small (≤ 3 cm) SPT doesn’t often have typical imaging features seen at computed tomography, easily misdiagnosed with other solid tumors, affecting the choice of treatment method.

Purpose: To describe imaging features of small (≤ 3 cm) SPTs seen at computed tomography.

Materials and Methods: This is a retrospective, observational and descriptive study including all patients treated at the University Medical Center of Ho Chi Minh City between 01/04/2016 and 30/04/2022.

Results: CT images of 33 histopathologically proven SPTs in the pancreas were retrospectively reviewed. In that, there were 10 small (≤ 3 cm) SPTs have a slight preference for the body region (40%), round shape (50%), solid components (100%), sharp margin and smooth border (90%), encapsulation (0%), peripheral calcification (30%), enhancement weaker than that of the adjacent pancreatic parenchyma during the arterial phase (90%), heterogeneous enhancement pattern (60%), no biliary or pancreatic ductal dilatation, no metastatic disease.

Conclusions: The CT imaging features of small SPTs are atypical, appear as purely solid tumors, should be differentiated from orther solid tumors.

Keywords: Computed tomography, solid pseudopapillary tumor, small (≤ 3 cm) solid pseudopapillary tumor.