摘要
目的 分析肝脏局灶性结节增生 (FNH)的螺旋CT平扫及三期增强扫描表现 ,以提高对FNH的诊断准确率。方法 对 2 1例 2 1个经手术病理证实的FNH进行螺旋CT平扫及增强的动脉期、门脉期、延迟期扫描。其中 2例行肝动脉血管造影。结果 2 1个FNH ,平扫 16个为低密度 ,5个为等密度 ,其中 12个病灶中央有点状、条状、放射状低密度影。动脉期 2 1个FNH除中央疤痕外 ,均明显均匀强化 ,9例见明显增粗的供血动脉 ;门脉期病灶密度下降 ,但均高于或略高于肝实质 ;延迟期病灶呈等密度或略低于肝实质 ,3例见包膜强化。血管造影可见粗大的供血动脉及引流静脉。结论 FNH在螺旋CT平扫及三期增强扫描中的特征性表现 ,对FNH的确诊及治疗方案的选择有重要价值。
Objective To analyse the pre and post contrast CT findings of liver focal nodular hyperplasia (FNH), so as to improve its diagnostic accuracy.Methods Pre contrast scan and post contrast tri phase scan (arterial phase, portal venous phase and delayed phase) were performed in 21 patients with FNH which were proved surgically and pathologically. Transcatherter arterial angiography was performed in 2 patients.Results On pre contrast scans,16 of 21 lesions were hypodense, 5 of 21 were isodense. Twelve of 21 lesions showed punctate, streak and radial scar. On the arterial phase scans, all the lesions were markedly and homogeneously enhanced, except for the central scar. Nine of 21 lesions showed dilated and tortuous arteries at the central or peripheral area. On the portal venous phase scans, focal density was decreased, but still showing hyperdense or slightly hyperdense relative to the normal liver. On the delay phase scans, the lesions changed to isodense or slightly hypodense. Enhanced capsule was observed in 3 patients . On the angiography images, dilated arteries and drainage veins were seen.Conclusion FNH has its special characteristics on the multiphasic helical CT scan. It is of great value in diagnosing the FNH and in choosing the appropriate therapy. [
出处
《中华肿瘤杂志》
CAS
CSCD
北大核心
2001年第5期409-412,共4页
Chinese Journal of Oncology
