n.低回声；在超声波图像中回声相对较弱的区域
Results The typical sonographic appearances were the presence of multiple enlarged as oval hypoechoic nodules with different size in the right inferior abdomen. 结果小儿急性肠系膜淋巴结炎典型的声像图特征是右侧中下腹部见数枚大小不等椭圆形低回声结节。
