Application value of CT in the diagnosis and invasive evaluation of gastrointestinal stromal tumors / 中国医师进修杂志

ABSTRACT

Objective To analyze the application value of CT in the diagnosis and invasive evaluation gastrointestinal stromal tumors (GIST).Methods The clinical data of 72 GIST cases examined by spiral CT scan and confirmed by surgery or pathology were analyzed retrospectively,evaluated the invasiveness by the tumor site,pattern,strengthen forms,plain and dual-phase enhanced CT scan value.Results GIST most commonly occurred in the stomach.Forteen cases were misdiagnosed in 72 cases of GIST patients,diagnosis of 5 cases was not made clearly.The differences between arterial,venous phase and scan difference in the same parts of different GIST classification were statistically significant (t =4.2,3.5,13.1,15.8,P ＜ 0.05).The GIST in the same part of the different risk classification scan,arterial,venous CT values;difference between the arterial and scan,venous and scan,the difference was not statistically significant (t =34.8,28.5,39.4,32.2,40.1,P ＞ 0.05).Reconstructed image could show the relationship among the tumor and its surrounding tissue and tumor feeding artery,the existence of which 33 cases of portal collateral,18 cases with the presence of arteriovenous fistula and 17 cases with liver metastasis.Conclusions Invasive different GIST dual-phase enhanced CT scans show that arteriovenous tumors are significantly enhanced;post-processing techniques can help clear the blood vessels and GIST relations with neighboring vessels and tissue imaging requires multi-disciplinary preoperative information analysis to make the right location and diagnosis.