螺旋CT多期扫描对肝局灶性结节增生的诊断价值

The value of MSCT in diagnosing focal nodular hyperplasia

目的探讨肝局灶性结节增生(FNH)在螺旋CT上的表现以及CT三维重建技术对诊断FNH的应用价值,提高CT诊断FNH的准确性。方法回顾性分析11例经病理检查证实的FNH的CT平扫和增强表现,所有病例均行螺旋CT增强扫描,其中4例行三维重建。结果 CT共发现11个病灶,均为单发;平扫CT上7个病灶为略低密度,4个为等密度;增强扫描动脉期,除了中央瘢痕和纤维分隔外,所有病灶都明显均匀强化;门脉期和延迟期大部分病灶变为等密度或略高密度;8个FNH病灶中发现中央瘢痕,2个病灶增强扫描后经三维重建可发现肿瘤周围增粗迂曲的血管。结论 FNH在螺旋CT增强扫描上表现具有特征性,螺旋CT诊断FNH具有重要价值。

Objective To explore the image of liver focal nodular hyperplasia（FNH）on MSCT and the value of the 3D recon slruction in diagnosing FNH ; to increase the accuracy of the diagnosis liver FNH by MSCT. Methods The images on CT scan and enhanced CT of 11 cases （of liver FNH diagnosed by pathology were analyzed retrospectively. All of these cases were examined by enhanced spiral CT scan,4 of them done by 3D reconstruction. Results 11 focuses were found by CT scan,both were single;among them,7 were a little low density shadow,4 equidensity one. All of the image density were homogeneous enhanced on arterial phase enhancement CT scanning,except the central scar and fiber separator. Most of them became equidensity or a little high density on portal and late phases enhancement CT scanning, the central scar was found in 8 focus;Thickening and circuitous vessel were found in 2 focuses scanning by enhanced CT and done by 3D reconstruction. Conclusion liver FNH has distinctive image on enhanced MSCT scan. Therefore,the enhanced MSCT scan has an important value in diagnosing FNH.