256-slice spiral CT manifestations and pathological analysis of gastrointestinal stromal tumors / 中国基层医药

ABSTRACT

Objective To analyze the CT manifestations of gastrointestinal stromal tumors(GIST),and compared with the pathological results,in order to improve the value of CT in clinical diagnosis of GIST.Methods 256 slice spiral CT manifestations of 35 cases with GIST confirmed by surgery and pathology were analyzed retrospectively.Results 30 cases with GIST tumors were located in the stomach,duodenum in 2 cases,ileum in 2 cases,1 case with multiple tumors (located in mesentery,retinal).The tumor size ranged from 1.0 to 11.2 cm.11 cases of lumps showed soft tissue mass,24 cases showed uneven density with cystic and necrosis,including 10 cases with ulceration in surface.There were 5 cases with hemorrhage,2 cases with scattered calcification.After enhancement scan,11 cases of tumors were homogeneous enhancement and 24 cases showed uneven enhancement.The solid composition was shown more rich blood supply,especially in the venous phase.There were 9 cases out of the digestive tract,22 cases in the digestive tract,4 cases were mixed growth.There were 35 cases with CD117 positive expression by immunohistochemistry,34 cases with CD34 positive expression.After postoperative pathological risk assessment,there were 21 cases with low risk malignant tumor,moderate malignant tumor in 7 cases,highly malignant tumor in 7 cases.Conclusion 256 layers spiral CT scan can accurately offer the morphology of gastrointestinal stromal tumor,location,size and internal structure,and evaluate the risk level of tumor,it is helpful for clinical preoperative treatment,and determination of the prognosis.