The evaluation of MR imaging in the diagnosis of primary duodenal adenocarcinoma
10.3969/j.issn.1002G1671.2019.06.016
- VernacularTitle:原发性十二指肠腺癌的MR影像评估
- Author:
Jingjing LIU
1
;
Xiangtian ZHAO
;
Yinhua LI
;
Yun WANG
;
Xuemei GAO
;
Jingliang CHENG
Author Information
1. 郑州大学第一附属医院磁共振科
- Keywords:
duodenal adenocarcinom;
diffusion weighted imaging;
magnetic resonance imaging;
magnetic resonance cholangiopancreatography
- From:
Journal of Practical Radiology
2019;35(6):918-921
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the imaging features and the diagnostic value of conventional and enhanced MRI,DWI and magnetic resonance cholangiopancreatography (MRCP)in primary duodenal adenocarcinoma.Methods 12 cases with duodenal adenocarcinoma confirmed by pathological results were analyzed by conventional and enhanced MRI,DWI (3.0T,b＝0 and 800 s/mm2 )and MRCP.Results 11 cases out of twelve cases of duodenal adenocarcinoma demonstrated uneven thickening of intestinal wall,while mass shadow was observed in 1 case.Slight hypointensity of T1 WI and slight hyperintensity of T2 WI were demonstrated in all the twelve cases .DWI demonstrated mild increase in signal in 3 cases,while hyperintensity was observed in 9 cases.On MRCP,ampullary obstructions were observed in 1 1 cases,of which 6 were accompanied with the dilatation of common bile duct (CBD),and 5 with dilatation of CBD and pancreatic duct, while no dilatation of CBD or pancreatic duct was observed in 1 case.The tumors showed moderate enhancement after intravenous administration of contrast material.No normal layered intestinal walls were observed.Conclusion Conventional and enhanced MRI combined with DWI can clearly demonstrate the features of duodenal adenocarcinoma.Additionally,MRCP is instrumental in assessing the lesions involved in the duodenal papilla.
