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首页> 外文期刊>Abdominal imaging. >Intraductal papillary mucinous neoplasms of the pancreas: correlation of helical CT and dynamic MR imaging features with pathologic findings.
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Intraductal papillary mucinous neoplasms of the pancreas: correlation of helical CT and dynamic MR imaging features with pathologic findings.

机译：胰导管内乳头状黏液性肿瘤：螺旋CT和动态MR成像特征与病理学发现的相关性。

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BACKGROUND: We assessed the imaging features of intraductal papillary mucinous neoplasms (IPMNs) of the pancreas paying special attention to underlying pancreatic fibrosis on three-phase helical computed tomography (CT) and dynamic magnetic resonance (MR) imaging. METHODS: Sixteen patients with histopathologically proven IPMNs underwent three-phase helical CT and dynamic MR imaging. RESULTS: IPMNs were seen as a cluster of cyst-like structures in branch duct (n = 5) and combined types (n = 10), and as a fusiform appearance in the main duct type (n = 1). IPMN shape was most easily visualized at the portal venous dominant phase or delayed phase owing to rim-like enhancement of the dilated ducts. Pathologically mild to severe fibrosis was seen on this enhanced rim replacing the surrounding pancreatic parenchyma. Communication between the dilated branch ducts and main pancreatic duct was identified in 15 patients on helical CT and 14 patients on dynamic MR imaging. In patients with fibrosis of pancreatic parenchyma surrounding this, communication was most easily visualized at the later phase on CT and MR imaging. Adenocarcinomas were depicted as papillary projections in eight of nine patients on CT and MR imaging. Invasion of the pancreatic parenchyma was seen in five of six patients as a solid mass in the pancreatic parenchyma. These masses were most easily visualized at the arterial dominant phase on both CT and MR imaging. CONCLUSION: Three-phase helical CT and dynamic MR imaging were useful in the diagnosis of IPMN of the pancreas.
机译：背景：我们评估了胰腺的导管内乳头状黏液性肿瘤（IPMNs）的影像学特征，尤其要注意基于三相螺旋计算机断层扫描（CT）和动态磁共振（MR）成像的基础胰腺纤维化。方法：16例经组织病理学证实为IPMN的患者接受了三相螺旋CT和动态MR成像。结果：IPMNs被视为在分支导管（n = 5）和组合类型（n = 10）中的囊状结构簇，在主导管类型（n = 1）中呈梭形外观。 IPMN的形状最容易在门静脉显性期或延迟期看到，这是由于扩张管的边缘样增强所致。在这个增强的边缘上发现了病理上轻至严重的纤维化，取代了周围的胰腺实质。螺旋CT的15例患者和动态MR成像的14例患者确定了扩张的分支导管与胰腺主导管之间的连通。在周围有胰腺实质纤维化的患者中，在CT和MR成像的后期阶段，交流最容易可视化。在CT和MR成像中，九位患者中有八位被描述为乳头状突出的腺癌。在六名患者中的五名中，胰腺实质侵犯是实质性肿块。在CT和MR成像中，这些肿块最容易在动脉显性期显现。结论：三相螺旋CT和动态MR成像对胰腺IPMN的诊断有帮助。

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