肝小静脉闭塞病的影像学分析(附4例报道)

目的 探讨肝小静脉闭塞病(hepatic veno-occlusive disease,HVOD)的影像学特征.方法 回顾性分析4例HVOD的临床及影像资料.4例行MRI三期增强扫描及超声检查,其中3例同时接受CT增强三期扫描.重点观察肝实质及肝血管的动态扫描变化并与平扫时进行比较.结果 2例经穿刺活检确诊,另外2例...

Imaging findings in four patients with hepatic veno-occlusive disease

Objective： To discuss the imaging characteristics of the hepatic veno-occlusive disease （HVOD）. Materials and Methods： Four cases of HVOD were retrospectively analyzed. Each of the case was scanned by MRI in 3 dynamic phases after contrast enhancement and ultrasound. Three of the 4 cases were also dynamically scanned CT. The analysis was focused on the dynamic change of the parenchyma and the vasculature system and compared with that of pre-contrast images. Results： Two cases were diagnosed by biopsy with the other 2 confirmed by clinical signs. On pre-contrast MR images, enlarged liver, seroperitoneum, and heterogenous signal intensities of the parenchyma were revealed. On post-contrast images, the liver demonstrated nonhomogenous enhancement in arterial phase, patchy enhancement and low-perfusion in portal vein phase, and slow wash-out in delayed phase. The dynamic change on CT images was similar with that of MRI. All of the cases revealed non-obstructive hepatic veins and inferior vena cava in ultrasound examination. Conclusions： The findings of HVOD were non-specific in ultrasound, pre-contrast MR images, and pre-contrast CT. The signs of dynamic contrast images were more valuable for the diagnosis.