Objective:To investigate the imaging features of gastrointestinal stromal tumors(GIST)and their diagnostic value

so as to improve the diagnosis of GIST.Methods:The clinical and imaging data of 19 cases with GIST proved by operation and pathology were analyzed retrospectively.Of the 19 cases

19 cases were diagnosed by imaging examination

18 cases by gastrointestinal barium

14 cases by CT

3 cases by MRI

and 8 cases by DSA.Results:Of the 19 cases with GIST

8 were located in stomach

2 in duodenum

3 in jejunum

2 in ileum

2 in colon

2 in mesentery;5 were benign and 14 malignant;3 cases was with hepatic metastasis and 2 with peritoneal lymphoid node metastasis.Conclusion:Imaging examinations have respectively features and advantages

which are helpful to the correct diagnosis of the disease;Gastrointestinal radiograph

CT

MRI and DSA play important roles in precise location

judging benign and malignant and differential diagnosis;The final diagnosis of GIST depends on immunohistochemical and electromicroscopic examination.