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首页> 外文期刊>Acta Radiologica >Focal pancreatitis mimicking pancreatic mass: magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP) findings including diffusion-weighted MRI.
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Focal pancreatitis mimicking pancreatic mass: magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP) findings including diffusion-weighted MRI.

机译：模仿胰腺肿块的局灶性胰腺炎：磁共振成像（MRI）/磁共振胆胰胰管造影（MRCP）的发现包括弥散加权MRI。

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BACKGROUND: Focal pancreatitis (FP) is a confined inflammation that mimics a pancreatic mass. Its imaging diagnosis is important to avoid unnecessary procedures. PURPOSE: To describe the spectrum of magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP) and diffusion-weighted MRI (DWI) findings of focal pancreatitis mimicking pancreatic masses. MATERIAL AND METHODS: Findings of MRI/MRCP including DWI with a b value of 0 and 600 s/mm(2) in 14 patients with pancreatic masses on MRI were retrospectively reviewed and compared to normal pancreas in 14 patients as a control group. RESULTS: FP revealed hypointense signal intensity (SI) (3/14), hypo- to isointense SI (7/14), or isointense SI (4/14) on T1-weighted images, and hypointense SI (1/14), isointense SI (5/14), iso- to hyperintense SI (7/14), or hyperintense SI (1/14) on T2-weighted images compared to remaining pancreas (RP). MRCP images revealed dilatation of the common bile duct (CBD) and main pancreatic duct (MPD) (5/14), dilatation of the MPD only (3/14), dilatation of the CBD only (3/14), and normal MPD and CBD (3/14). Both FP and RP revealed three types of time-signal intensity curves: 1) rapid rise to a peak, with a rapid decline (FP=2, RP=4), 2) slow rise to a peak, followed by a slow decline (FP=5, RP=4), and 3) slower rise to a peak, with a slow decline or plateau (FP=7, RP=6). Mean apparent diffusion coefficient (ADC) values for FP and RP were 2.09+/-0.18 and 2.03+/-0.2 x 10(-3) mm(2)/s, respectively. ADC values of FP and RP revealed no significant difference. CONCLUSION: The spectrum of imaging findings of focal pancreatitis on MRI/MRCP including DWI was described. Findings of FP were not distinctive as compared to the remaining pancreas.
机译：背景：局灶性胰腺炎（FP）是模拟胰腺肿块的局限性炎症。其影像学诊断对避免不必要的程序很重要。目的：描述模拟胰腺肿块的局灶性胰腺炎的磁共振成像（MRI）/磁共振胆胰胰管造影（MRCP）和弥散加权MRI（DWI）的发现。材料与方法：回顾性分析14例胰腺肿块患者的MRI / MRCP包括b值分别为0和600 s / mm（2）的DWI，并将其与14例正常胰腺作为对照组进行比较。结果：FP在T1加权图像上显示了低信号强度（SI）（3/14），低至等强度SI（7/14）或等强度SI（4/14），以及低强度SI（1/14），与剩余的胰腺（RP）相比，T2加权图像上的等强度SI（5/14），等强度至高强度SI（7/14）或高强度SI（1/14）。 MRCP图像显示胆总管（CBD）和主胰管（MPD）扩张（5/14），仅MPD扩张（3/14），仅CBD扩张（3/14）和正常MPD和CBD（3/14）。 FP和RP都显示了三种类型的时间信号强度曲线：1）快速上升到峰值，然后快速下降（FP = 2，RP = 4），2）缓慢上升到峰值，然后缓慢下降（ FP = 5，RP = 4），和3）缓慢上升至峰值，并出现缓慢下降或平稳（FP = 7，RP = 6）。 FP和RP的平均视在扩散系数（ADC）值分别为2.09 +/- 0.18和2.03 +/- 0.2 x 10（-3）mm（2）/ s。 FP和RP的ADC值显示无显着差异。结论：描述了包括DWI在内的MRI / MRCP上局灶性胰腺炎的影像学表现。与其余胰腺相比，FP的发现并不独特。

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