摘要
背景与目的:肝转移瘤虽然较常见,但少部分因影像表现较特殊而容易误诊。本研究按照肝转移瘤的MRI形态及信号特点进行分类,探讨少见类型的特征,以提高诊断的准确性。方法:按照入选标准从MRI上腹部平扫和增强检查诊断或怀疑有肝转移的患者中筛选出174例肝转移瘤病例,诊断标准为病理证实、影像观察及随访。对各种来源的肝内转移灶按照MRI表现的形态分为结节状、片状和弥漫状,并按照瘤灶的信号特点分为普通型、血管瘤样型和囊肿样型。结果:肝转移瘤中结直肠来源者最多,占31.0%。按形态分类,结节状、片状及弥漫状转移所占比例分别为:96.6%、2.3%、1.1%;按信号特点分类,普通型、血管瘤样型及囊肿样型所占比例分别为87.9%、4.0%、8.1%。结论:肝转移瘤主要为结节状和普通型,但尚有其他少见形状和类型,MRI扫描和临床随诊可提高诊断的准确性。
BACKGROUND ＆ OBJECTIVE： Although liver metastases are very common, some of them would be misdiagnosed because of their specific appearance on imaging. This study was to summarize the types of liver metastases according to the magnetic resonance imaging （MRI） appearance, and explore the characteristics of uncommon types to improve the accuracy of diagnosis. METHODS： A total of 174 consecutive patients with liver metastases were screened from the patients with diagnosis or suspicion of liver metastases according to plate or enhanced MRI scan. Liver metastases were confirmed through pathologic examination, medical imaging, or follow-up. Lesions were categorized as nodular, segment, and diffusion classes by shape, and categorized as common, mimicking hemangioma, and mimicking cyst patterns according to the characteristics of signal intensity. RESULTS： Common primary tumors of liver metastases were colon and rectum carcinomas （31.0%）. According to the shape of lesions, the proportions of nodular, segment, and diffusion classes were 96.6%, 2.3%, and 1.1%, respectively. According to the characteristics of signal intensity, the proportions of common, mimicking hemangioma, and mimicking cyst patterns were 87.9%, 4.0%, and 8.1%, respectively. CONCLUSIONS. Most liver metastases are nodular in shape, and present as common pattern, but some uncommon types also exist. MRI scan and clinical follow-up could increase the accuracy of diagnosis
出处
《癌症》
SCIE
CAS
CSCD
北大核心
2006年第2期212-216,共5页
Chinese Journal of Cancer
关键词
肝肿瘤/转移性:肝肿瘤/诊断
磁共振成像
成像类型
成像特征
Liver neoplasms/metastatic
Liver neoplasms/diagnosis
Magnetic resonance imaging
Imaging type
Imaging feature
