MRI diagnosis of duodenal papilla adenocarcinoma with low biliary obstruction
10.3969/j.issn.1002-1671.2014.08.019
- VernacularTitle:十二指肠乳头腺癌合并胆道低位梗阻的 MRI 诊断
- Author:
Guoguo LU
;
Xuemei GAO
;
Jingliang CHENG
;
Yubo LI
- Publication Type:Journal Article
- Keywords:
duodenal papilla tumor;
biliary obstruction;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2014;(8):1320-1323
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze MRI and MRCP appearances of duodenal papilla adenocarcinoma with low biliary obstruction,in order to improve the diagnosis of this lesion.Methods The clinical data of 29 patients with duodenal papilla adenocarcinoma con-firmed by pathology were retrospectively analyzed.All cases were scanned by un-enhanced MR and MRCP,and the lesion shape,sig-nal characteristics and biliary obstruction of the lesion were analyzed.Results A soft tissue mass or nodule in the duodenal papilla region was showed in 29 cases.On non-enhanced T1 WI,1 9 lesions demonstrated slightly hypointense ,10 lesions were isointensity. On T2 WI,21 lesions were slightly hyperintense,8 lesions were isointensity.On DWI(b=800 s/mm2 ),the lesions were hyperintense or slightly hyperintense.On MRCP,the narrow at the distant end of the common bile duct was showed;20 lesions showed the expan-sion of intra-hepatic bile duct and common bile duct,and showed “soft rattan sign”,7 lesions showed the expansion of the bile duct inside and outside the liver and the pancreatic duct,and “double duct sign”could be seen.2 cases showed the expansion of the com-mon bile duct.Conclusion The combination of non-enhanced MR and MRCP can show duodenal papilla adenocarcinoma with low biliary obstruction .Definite MRI diagnosis of duodenal papilla adenocarcinoma is important for treatment.
