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The Value of MRI in the Diagnosis of Solid Pancreatic Tumors
Author(s): 
Pages: 1838-1842
Year: Issue:  12
Journal: Journal of Clinical Radiology

Keyword:  Magnetic resonance imagingSolid pancreatic tumorsPancreatic ductal adenocarcinomaNeuroendocrine tumoursMetastases;
Abstract: 目的 探讨3.0 T MRI对胰腺实性肿瘤的诊断价值.方法 回顾性分析经病理或临床证实的49例胰腺实性肿瘤的病例资料,其中胰腺癌30例,神经内分泌肿瘤5例,实性假乳头状瘤7例,转移瘤7例.49例均行MRI平扫和增强扫描,23例行MRCP.总结各种肿瘤的MRI表现.结果 胰腺癌形态不规则,T1WI低信号11例,略低信号18例,等信号1例;增强动脉期轻度强化16例,无强化14例,实质期及延迟期呈延迟强化;18例MRCP见“双管征”,1例远端胰管扩张.5例神经内分泌肿瘤中,4例高分化者边界清晰,1例神经内分泌癌边界不清;增强扫描,动脉期明显强化4例,1例三期强化程度均低于正常胰腺组织.实性假乳头状瘤肿块平均直径6.2cm,实性部分T1WI呈稍低信号,T2WI呈稍高信号,动态增强扫描呈渐进性强化;6例肿瘤有完整包膜,包膜T1WI、T2WI均呈低信号,增强扫描可见延迟强化.7例胰腺转移瘤,单发结节3例,多发结节2例,局部胰腺肿大2例;T1WI呈稍低信号6例,1例伴出血呈高信号;增强扫描三期均呈轻度不均匀强化5例,环形强化1例,动脉期明显强化、延迟期及门静脉期强化减退1例;3例MRCP可见“双管征”.结论 MRI对于胰腺实性肿块的诊断及鉴别具有重要价值.
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