胆管错构瘤的影像诊断与鉴别诊断

Imaging and Identification Diagnosis of Bile Duct Hamartoma

目的:探讨胆管错构瘤的CT、MRI及超声表现,以提高对本病的认识,并与肝内其它弥漫性病变鉴别,减少误诊。方法:回顾性分析13例胆管错构瘤的CT、MRI及超声表现,并结合文献,对本病的病理、临床及影像特点进行讨论。结果:CT显示病灶呈多发低密度,大小不等,形态各异,边缘部分清楚,部分模糊,增强扫描无强化;MRI显示病灶呈长T1长T2信号,形态各异,增强扫描无强化;超声显示肝内多发低至无回声异常信号,彩色多普勒未见异常血流信号。结论:正确认识胆管错构瘤的影像特点,对本病的诊断及鉴别诊断有较大帮助。

Objective： To study the profiles of bile duct hamartoma under CT,MRI and ultrasound diagnosis and to differentiate them from those of liver diffuse lesions to reduce misdiagnosis,thus improving the understanding on bile duct hamartoma. Methods： Retrospective analysis of 13 cases of bile duct hamartoma of CT,MRI and ultrasound results was performed. Based on this analysis and literature,the disease pathology,clinical and imaging characteristics were discussed.Results： CT results showed multiple low density lesions with different size,different shapes,and the clear or obscure edge,and no image enhancement under enhanced scan; MRI results showed lesions with long T1 and long T2 signal,with different shapes,and no image enhancement under enhanced scan; Ultrasound results showed multiple low or no echo signals. The color Doppler showed no abnormal blood flow signal. Conclusions： Good understanding on images characteristics of bile duct hamartoma is helpful for the diagnosis and differential diagnosis of this disease.