胃部异位胰腺的多层螺旋CT表现

发布时间：2018-08-13 14:04

【摘要】：目的分析胃部异位胰腺多层螺旋CT(MSCT)的影像特征,探讨MSCT对胃部异位胰腺的诊断价值。资料与方法回顾性分析15例经病理证实的胃部异位胰腺患者的临床和MSCT资料,从病灶部位、形态、边界分析CT表现特征,并测量异位胰腺的大小、异位胰腺及正常胰腺的CT值。结果 12例异位胰腺位于胃窦,11例位于大弯侧;11例向腔内生长;10例边界欠清。病灶的平均长径(LD)/短径(SD)值为1.89,异位胰腺大小测量一致性均较高:LD的组内相关系数为0.99,SD的组内相关系数为0.98。所有病灶均匀、持续强化,其中4例病灶边缘可见脐凹征。异位胰腺与正常胰腺的平扫及门静脉期CT值差异无统计学意义(t=0.402、-1.05,P0.05),动脉期CT值差异有统计学意义(t=3.13,P0.05)。结论异位胰腺在MSCT影像上多位于胃窦、大弯侧,突向腔内生长,呈卵圆形,LD/SD1.4。异位胰腺与正常胰腺密度相似,增强扫描强化程度根据异位胰腺的病理构成而不同。异位胰腺增强扫描可见脐凹征,有助于异位胰腺的诊断与鉴别诊断。
[Abstract]:Objective to analyze the imaging features of multislice spiral CT (MSCT) in ectopic pancreas of stomach and to explore the value of MSCT in the diagnosis of ectopic pancreas. Materials and methods the clinical and MSCT data of 15 patients with gastric ectopic pancreas confirmed by pathology were retrospectively analyzed. The CT features of the ectopic pancreas were analyzed from the location, shape and boundary of the lesion. The size of the ectopic pancreas, the CT value of the ectopic pancreas and the normal pancreas were measured. Results 12 cases of ectopic pancreas were located in antrum of gastric antrum. 11 cases of ectopic pancreas were located in the great curved side. The mean long diameter (LD) / short diameter (SD) of the lesion was 1.89, and the consistency of measurement of ectopic pancreas size was higher than that of the control group. The correlation coefficient was 0.98in the group with 0.99SD. All the lesions were homogeneous and continuously enhanced, of which 4 cases showed umbilical fovea sign at the edge of the lesion. There was no significant difference in CT value between ectopic pancreas and normal pancreas in plain scan and portal vein phase (t = 0.402), but there was significant difference in CT value in arterial phase (t = 3.13 P 0.05). Conclusion the ectopic pancreas is located in antrum, great curved side, and the process grows into the lumen on MSCT images, and it is an oval LD- D / SD 1.4. The density of ectopic pancreas is similar to that of normal pancreas, and the enhancement degree is different according to the pathological composition of ectopic pancreas. The contrast-enhanced scanning of ectopic pancreas shows umbilical fovea sign, which is helpful for the diagnosis and differential diagnosis of ectopic pancreas.
【作者单位】：新疆维吾尔自治区克拉玛依市第二人民医院放射科;
【分类号】：R657.5;R816.5

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