胰腺常见囊性肿瘤的影像表现特征及其鉴别诊断
Chinese Journal of Medical Imaging Technology（2011）
Abstract
目的 探讨胰腺常见囊性肿瘤的MSCT和MRI表现特征及其鉴别诊断要点.方法 回顾性分析经手术病理证实的41例胰腺囊性肿瘤[浆液性囊性肿瘤(SCN)10例,黏液性囊性肿瘤(MCN)14例,导管内乳头状黏液性肿瘤(IPMN)17例]的MSCT和MRI表现.结果 SCN中浆液性微囊性腺瘤7例,呈分叶状,囊小而多,多具有中心瘢痕;浆液性寡囊性腺瘤2例,1例单房、1例多房,囊大而少,边缘分叶;实性浆液性腺瘤1例,CT增强检查明显强化,但T2WI可显示其囊性特征.MCN囊大而少,边缘多光滑.IPMN与胰管相通,单房者多表现为杵状指样的囊,多房者囊常呈多种形态.IPMN胰管可出现远端、近端或全程扩张,而SCN和MCN仅近端扩张.结论 胰腺常见囊性肿瘤中囊的不同形态对鉴别诊断有提示作用.全程或远端胰管扩张只见于IPMN.
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Key words
Cystic neoplasm,Magnetic resonance imaging,Pancreatic neoplasms,Tomography, X-ray computed
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