肝脏转移性神经内分泌癌的CT表现

CT findings of metastatic neuroendocrine carcinoma of liver

目的总结肝脏转移性神经内分泌癌的CT表现,探讨肝脏转移性神经内分泌癌的影像学特征,提高肝脏转移瘤的诊断能力。方法 回顾性分析肝脏转移性神经内分泌癌CT的影像学表现,归纳其影像学特征。结果 肝脏转移性神经内分泌癌CT表现为等密度或稍低密度占位,肿瘤坏死囊变区域较小。尤其是瘤灶直径<2cm时,肿瘤多呈均质改变;瘤灶直径>3 cm时,少部分瘤灶可出现坏死囊变。对比强化扫描,不含坏死成分的瘤灶动脉期呈均匀强化,门脉期密度呈等密度为主或呈相对低密度,延时期呈相对低密度。结论 肝脏转移性神经内分泌癌的多层螺旋CT影像学表现具有一定的特征性,可为临床的鉴别诊断提供帮助。

Objective To investigate the computed tomography （CT） imaging features of metastatic neuroendocrine carcinoma of the liver. Methods The imaging materials of 15 patients were retrospectively analyzed and the imaging features were induced. Results The CT plain film of the liver metastatic neuroendocrine carcinoma showed slightly low density or isodensity mass, cystic necrosis was rare. The tumor always showed uniform density when the tumor was not more than 2 cm in diameter,and showed nonuniform when the tumor was more than 3 em in diameter,with cystic necrosis in it. The tumor was enhanced homogeneously in the arterial phase,showed lower density or isodensity in the portal phase, low density in the delayed phase. Conclusion The multi-slice spiral CT findings of metastatic neuroendocrine carcinoma of the liver has some special findings, which could provide help for the identification of clinical diagnosis.