肝脏假肿瘤性病变螺旋CT表现

Spiral CT Features of Pseudotumorous Lesions in Liver

目的探讨肝脏假肿瘤性病变的螺旋CT平扫及动态增强扫描表现特点。资料与方法回顾性分析25例经临床证实的肝假肿瘤性病变患者的CT图像,详细观察和记录肝假肿瘤性病灶的部位、形状以及平扫与增强各期密度变化。结果 25例共检出假肿瘤灶29个,13例位于肝镰状韧带周围,其中4例镰状韧带旁以纵裂为界左叶外段与内段病灶呈对称性分布;6例位于胆囊窝周围,2例位于肝包膜下,2例位于左叶内段后缘,2例位于肝脏中心。病灶为结节形、楔形或不规则形。按MSCT表现可分为高密度和低密度的假肿瘤性病变。结论肝脏假肿瘤性病变在螺旋CT平扫及动态增强扫描各期的密度及其变化有特征性表现,有助于与肝内真性病变进行鉴别。

Objective To investigate the imaging features of pseudotumorous lesions in liver by plain and dynamic contrast enhanced spiral CT.Materials and Methods The CT findings of 25 patients with pseudotumorous lesions were analyzed retrospectively.The size,location and density of pseudotumorous lesions on plain and enhanced phase were carefully observed.Results A total of 29 pseudotumorous lesions were found in 25 cases.Of the 25 lesions,13 were located at the side of falciform ligament,of which 4 located symmetrically in the medial segment of the left lobe and the lateral segment of left lobe.6 cases at the side of the gallbladder,2 cases under the liver capsule,2 at the posterior border of medial segment,2 in the center of the liver.The lesions had nodular shape,wedge shaped or irregularly outlined.The pseudotumorous lesions were divided into high density and Low density according to spiral CT images.Conclusion Pseudotumorous lesions have characteristics in location,attenuation,and changes of attenuation on plain and dynamic contrast enhanced spiral CT,which are useful to distinguish from the other liver diseases.