结论无回声边及肿瘤内无回声区提示RCC的诊断。
Conclusions an anechoic rim or intratumoral cysts suggests the diagnosis of RCC.
良性肿瘤多表现为边界光滑，侧缘回声减弱，彩色多普勒不能检出或检出少量星点状血流信号。
In benign tumors, smooth edges and lateral echo attenuation were demonstrated, and they were of poor blood flow signals.
结果应用激光消融即刻超声复查，发现原肿瘤低回声区出现气化所致高回声；
Results Right after the laser ablation, instead of the original low echogenic tumor area, a high echogenic area representing the gas bubbles was showed by sonography.
原发性肿瘤多表现为椭圆形或分叶状不均匀低回声肿块。
Oval or lobulated heterogeneous hypoechoes were the diagnostic features of primary omental tumors.
诊断，建立了超声显示低回声肿瘤无明显钙化。
Diagnosis was established by ultrasonography showing hypoechoic tumours without significant calcifications.
结论无肿瘤病史时，发现双侧卵巢肿瘤尤其内有光滑无回声时应想到转移瘤的可能。
Conclusion Ovarian metastasis should be included in the differentiated diagnosis of ovarian masses, it was characterized by well defined masses with smooth hypoecho findings in bilateral ovaries.
结论无肿瘤病史时，发现双侧卵巢肿瘤尤其内有光滑无回声时应想到转移瘤的可能。
Conclusion Ovarian metastasis should be included in the differentiated diagnosis of ovarian masses, it was characterized by well defined masses with smooth hypoecho findings in bilateral ovaries.
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