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目的研究肝脏上皮样血管平滑肌脂肪瘤(EAML)的超声表现特征。方法回顾性分析39例(41个病灶)经手术病理证实为肝EAML的声像图,分析其超声表现特征。结果肝EAML以中年女性多见。病灶大小1.5~16cm,平均(5.8±4.1)cm。超声表现为66%(27/41)病灶呈低回声,34%(14/41)呈高回声;44%(18/41)病灶内部回声不均匀;51%(21/41)边界清;17%(7/41)病灶周边可见低回声晕环。CDFI显示83%(34/41)病灶内有血流信号,其中46%(19/41)表现为周边和内部较丰富点线状血流(I型),血管扭曲杂乱,部分病灶周边有血管包绕;37%(15/41)病灶表现为周边和(或)内部少量点状、短线状血流(Ⅱ型),RI值为0.38~0.66,平均值0.50±0.10。5%(2/39)可出现局部复发和远处转移,为恶性肝EAML。结论肝EAML因其组织成分和血供特点,其灰阶声像图和CDFI表现具有一定特征性,可有助于诊断。
Objective To study the ultrasonographic features of hepatic epithelioid angiomyolipoma (EAML). Methods A retrospective analysis of 39 cases (41 lesions) confirmed by pathology of liver EAML sonographic analysis of the characteristics of ultrasound. Results Liver EAML was more common in middle-aged women. The size of the lesion was 1.5 ~ 16cm, with an average of (5.8 ± 4.1) cm. Echogenicity was found in 66% (27/41) of the lesions, hyperechoic in 34% (14/41), uneven echo in 44% (18/41) of the lesions, clear border in 51% (21/41), % (7/41) of the lesion visible hypoechoic halo. CDFI showed that there were blood flow signals in 83% (34/41) of the lesions, of which 46% (19/41) showed peripheral and internal plethysmographic linear blood flow (type I), vascular distortion and disorder, blood vessels around some lesions (RI) ranged from 0.38 to 0.66 with an average of 0.50 ± 0.10.5% (2 / 39) There may be local recurrence and distant metastasis, a malignant liver EAML. Conclusion Due to its tissue composition and blood supply characteristics, the liver EAML has certain characteristics of gray-scale sonography and CDFI performance, which may be helpful for diagnosis.