Multi-slice CT Features and Misdiagnosis Analysis of Gastric Schwannoma and Gastric Stromal Tumor
Objective To explore the multi-slice CT features of gastric schwannoma and gastric stromal tumors(dia＜10cm)and analyze the causes of misdiagnosis.Methods A retrospective analysis was conducted on the complete clinical and imaging data of 6 cases of gastric schwannoma and 15 cases of gastric stromal tumors confirmed by surgery and pathology and the multi-slice CT features in our hospital in the past 3 years.Results 5 of 6 cases of gastric schwannoma were misdiagnosed as gastric stromal tumors,6 cases of schwannoma and 15 cases of gastric stromal tumors were all solitary and located in the body of the stomach.The 6 cases of schwannoma had a regular round shape,uniform density,clear boundaries,and no infiltration in the surrounding fat spaces.The 15 cases of gastric stromal tumors had uneven density and irregular lobulated morphology,and some lesions had unclear fat spaces.Both analyses more tend to grow inward.The dynamic enhancement of the 6 cases of schwannoma showed moderate uniform progressive enhancement,while the 15 cases of gastric stromal tumors showed arterial phase enhancement,portal vein phase enhancement was the most obvious,balance phase reduction,and low-density areas within the lesion were not enhanced or slightly enhanced.Small lymph node shadows can be seen around the 6 cases of schwannoma,while swollen lymph node shadows can be seen in the 15 cases of gastric stromal tumors.Both analyses have no distant metastasis.Conclusion Gastric schwannoma and gastric stromal tumors(dia＜10cm)have certain characteristics in morphology,boundary,cystic changes,density,enhancement mode,surrounding fat spaces,and lymph node conditions,which have differential diagnostic significance.However,when tumor is small,the imaging differentiation is difficult to distinguish.
NETL
NSTL
万方数据
