十二指肠间质瘤的多层螺旋CT表现及与病理对照

目的：探讨多层螺旋CT表现对十二指肠间质瘤的诊断价值。方法：回顾性分析经手术病理证实的19例十二指肠间质瘤的螺旋CT表现及其三维重组图像,并与病理结果对照。结果：本组19例间质瘤中,良性4例,交界性3例,恶性12例;5例侵犯周围器官。十二指肠间质瘤的CT表现为类圆形、分叶状或形态不规则的软组织肿物,以向肠腔外生长为主（n=14）,肿块内密度均匀或呈混杂密度影。增强扫描显示,肿块呈明显均匀强化（n=2）或呈中央不规则无强化区而周边强化较明显（n=16）。结论：十二指肠间质瘤的CT表现有一定特征性,多层螺旋CT表现有助于定位和定性诊断。

Gastrointestinal stromal tumors of the duodenum:multidetector spiral CT findings with pathologic correlation

Objective：To assess multidetector spiral CT fingdings of gastrointestinal stromal tumors of the duodenum.Methods：Nineteen patients with gastrointestinal stromal tumors of the duodenum underwent multidetector spiral CT scan.The location,size,morphology,enhancement features,relationships to the surrounding organs and metastasis of the tumors were assessed retrospectively by two radiologists with pathologic correlation.Results：Nearly all nineteen tumors （benign 4 cases,malignant 12 cases and borderline tumor 3 cases） had an exophytic growth pattern （n=14）,and most showed heterogeneous in density （n=17）.Of them sixteen tumors had central low attenuating areas in the masses as well as peripheral enhancement.The invasion of pancreas （n=1）,colon （n=1） and capsule of right kidney （n=1） was seen respectively.No lymph nodal enlargement was found.Conclusion：Multidetector spiral CT plays an important role in diagnosis and differential diagnosis of gastrointestinal stromal tumors of the duodenum.