CT在胃肠道间质瘤诊断及随访中的价值

目的探讨胃肠道间质瘤(G IST)的CT表现及在随访中的价值。方法回顾性分析117例经手术病理证实的G IST患者CT资料。结果117例患者共118个间质瘤。发生部位依次为胃56例,小肠40例,食管6例,结直肠6例,肠系膜3例,后腹膜2例,来源不明5例。肿瘤大小1.7~18 cm。<5 cm者多为圆形或类圆形,密度均匀,增强后均匀强化,>5 cm者多为不规则分叶状,密度不均,中心可见小片或大片状低密度区,增强后呈不均匀强化。肿块内伴发气体者17例,伴有钙化13例,12例伴有转移。随访37例,23例发生复发和/或肝转移。结论CT检查在G IST诊断及随访中有重要价值。

The Value of CT in Diagnosing and Following -up Gastrointestinal Stromal Tumor

Objective To analyze the value of CT in diagnosing and following-up gastrointestinal stromal tumors(GIST).Methods 117patients with CT examination and histological diagnosis of GIST were retrospectively reviewed.Results 117 patients had 118 GIST.Thelocations of primary tumor were as follows: stomach(n=56),small intestine(n=40),esophagus(n=6),colorectum(n=6),mesentery(n=3),retroperitoneum(n=2) and indefinite origin(n=5).Size of tumor was 1.7~18 cm.Tumors(<5 cm) mostly appeared round or ovoid shape and homogenous density with uniform enhancement.On the contrary,tumors(>5 cm) often demonstrated lobulated shape with central low attenuation area and heterogeneous enhancement.There were 17 tumors with bubble,13 with scattered calcifications,12 with metastases of liver.With following-up,23 of 37 were developed local recurrence or hepatic metastases.Conclusion CT is aneffective and useful imaging modality in the diagnosis and follow-up gastrointestinal stromal tumors.