肝脏局灶性结节增生的螺旋CT诊断

The apiral CT diagnosis of hepatic focal nodular hyperplasia

目的：分析肝脏局灶性结节增生在螺旋CT平扫及三期增强扫描中的影像学表现，探讨其诊断及鉴别诊断价值。方法回顾性分析17例经手术或穿刺病理证实的肝脏局灶性结节增生患者的螺旋CT表现特点。结果17例肝脏局灶性结节增生中13例位于肝右叶，4例位于肝左叶，且大多分布于肝包膜下。平扫呈略低或等密度，动脉期病灶中度～明显强化，瘢痕不强化呈低密度，门静脉期或延迟期瘢痕强化。5例病灶中见明显瘢痕组织。结论肝脏局灶性结节增生螺旋CT扫描典型者较易确诊，不典型者需进一步检查或穿刺活检。

Objective To analyze the imaging performance of the focal nodular hyperplasia of the liver in spiral CT scan and three-phase enhanced scan,and evaluate the diagnosis and differential diagnosis. Methods The characteristics of spiral CT scan of 17 cases were retrospectively analyzed confirmed by surgery or biopsy of the liver focal nodular hyperplasia. Results ①In 17 cases ,there were 13 cases in right lobe of liver,4 cases in the left lobe,mostly distributed in the liver subcapsular. ②They were showed slightly lower or equal density on nonenhanced scan , medium-obviously enhanced on arterial phase. Scar tissue was not enhanced on arterial phase,but enhanced on portal venous phase or delayed phase.5 cases had obvious the scar tissue in lesions. Conclusion The typical findings of the hepatic focal nodular hyperplasia with CT scan are easily diagnosed. Atypical case is required further examination or biopsy.