胆囊腺瘤的MSCT表现

The Multi-slice Spiral CT Manifestations of Gallbladder Adenoma

目的探讨胆囊腺瘤(GA)的多层螺旋CT(MSCT)表现,以提高对GA诊断的准确率。方法回顾性分析经临床术后病理证实8例GA的MSCT表现,所有病例均进行CT平扫及三期增强扫描。结果本组病例中7例单发,6例位于胆囊体部,1例位于胆囊底部;1例多发(3枚),分别位于胆囊底、体部;2例癌变。8例GA10枚病灶中,分叶状6枚,类圆形4枚;宽基底7枚,窄基底3枚。病灶直径约0.8-2.3cm;2枚癌变病灶直径大于2.0cm,邻近胆囊壁不均匀增厚。CT平扫呈等、低密度,CT值约23-47HU;三期增强扫描9枚病灶中度及明显强化,以门脉期强化较显著,强化范围在48-102HU之间,其内无出血、坏死及钙化。结论 GA的MSCT表现具有一定的特征性,认识这些特点有助于提高诊断准确率。

Objective To explore the MSCT manifestations of gallbladder adenoma（GA）,to further improve the accuracy of diagnosis. Methods The MSCT manifestations of 8 cases With GA Confirmed by postoperative pathology were analyzed retrospectively, CT pre- contrast scanning and three phases contrast enhanced scanning were performed in all cases. Results 7 cases were single in the cases,6 cases were located in the body of gallbladder, 1 case in the bottom. 1 case were multiple （3 lesions）, Lesions respectively located in the bottom and the body of the gallbladder. 2 cases were malignant transformation. Among 10 lesions of 8 cases;6 lesions were lobulated, 4 lesions were nearly round. 7 lesions were broad-based interface, 3 lesions were narrow-based interface.Lesions were about 0.8-2.3cm in diameter. 2 lesions of malignant transformation is greater than 2.0 cm in diameter, irregular thickening of gallbladder wall adjacent to lesions. Lesions show isodensity or low density on CT pre-contrast scanning, ranged from about 23-47 HU. By three phases contrast enhanced scanning, 9 lesions show moderate and significant enhancement, more significant in portal vein phase, ranged from about 48-102HU, no hemorrhage,necrosis and calcification in the lesion. Conclusion The MSCT performance of GA has a certain characteristic, understanding these features help to improve the diagnostic accuracy.