病例报告例１，男，４６岁，腹部膨大１月。Ｂ超检查发现左下腹有一巨大强回声光团，直径约１５ｃｍ×１４ｃｍ，界清，类圆形，内部回声明显增强，但均匀，后方无声衰。包块不活动，与周围器官无明显联系。另于左上腹发现两个３２ｃｍ×３４ｃｍ的圆形低回声光团，内部回... Case report example 1, male, 46 years old, abdominal enlargement in January. B-ultrasound revealed a huge strong echogenic mass in the left lower abdomen, with a diameter of about 15cm x 14cm, a clear boundary, a round shape, and a distinct internal echo, but it was uniform and there was no sound attenuation at the rear. The mass is inactive and there is no obvious connection with the surrounding organs. Another 32cm×34cm round low echo light group was found on the left upper abdomen.