MSCT in assessment of the malignancy of gastrointestinal stromal tumor

Objective To explore the value of MSCT features in predicting the malignancy degree of gastrointestinal stromal tumor(GIST).Methods CT Data of 44 patients with pathologically proved GIST were reviewed.The differences of CT features among different malignancy degrees of GIST were analyzed.Results Pathology confirmed very low malignancy GIST in 5 patients,low malignancy in 9,moderate malignancy in 7 and high malignancy in 23.The tumor size,location,growth pattern,enhancement pattern,contour,mesenteric fat infiltration,cystic-necrosis,tumor vascularization and direct organ invasion had statistical differences among different malignancy degrees(all P0.05).Conclusion Tumor size,location,growth pattern,enhancement pattern,border,mesenteric fat infiltration,cystic-necrosis,tumor vascularization and direct organ invasion might be predictive indexes for malignancy of GIST.