关键词: 胆囊癌, 磁共振成像, 磁共振胰胆管成像, 诊断

Abstract: Objective To investigate the imaging features of gallbladder carcinoma in magnetic resonance imaging(MRI), and to improve the diagnosis of the gallbladder carcinoma. Methods 47 patients with clinical diagnosis of gallbladder carcinoma were studied with MRI. 43 cases were verified by pathology. The MRI signs of the gallbladder carcinoma cases were analyzed and compared with the surgical and pathological findings. Result 12 cases were wall-thickening type; 19 cases were intraluminal type; 16 cases were mass type.The lesions were slightly hypointense or isointense signal in T1WI, and slightly hyperintense or hyperintense signal in T2WI. The model of enhancement isprogressive or continued.There were 20 cases combined with dilated intra/extrahepatic bile duct. The level of the obstructions were common hepatic duct in 80% cases. There were25 cases with directly invading adjacent liver parenchyma, 6 involving duodenum, 4 involving omentum and 3 involving pancreas. There were 24 cases with lymph node metastasis, including 9 cases in N1 stage and 15cases in N2 stage. There were 10 caseswith liver metastasis, all of which were diagnosed correctly.The accuracy of clinical stages according to MRI findings was 90.7% compared with surgical stages. Conclusion MRI could clearly show the gallbladder carcinoma, and accurately evaluate the spread of invasion and metastasis. MRI is helpful to making exact clinical tumor stages, which is essential to making therapeutic option.

Key words: Gallbladder carcinoma, magnetic resonance imaging, Magnetic resonance cholangiopancreatography, Diagnosis