患儿男,8岁。左侧阴囊包块8年。患儿自出生后,其父母即发现患儿左侧阴囊内有一约花生米大小包块,质地较硬,患儿无明显自觉不适,未行诊治。左侧阴囊内包块逐渐进行性增大,大小与活动及体位变化无关。超声检查:左侧阴囊内未见正常睾丸回声,内示一7.3mm×5.8mm×10mm的实质性回声区,周围为囊性无回声区,大小为53mm×44mm×32mm,内可见条索状强回声 Children male, 8 years old. Left scrotum mass 8 years. Children from birth, the parents found that the left scrotum in children with a peanut size of the mass, hard texture, children with no obvious discomfort, not diagnosis and treatment. The left scrotum within the mass gradually increased, the size and activity and body position has nothing to do. Ultrasonography: No normal testicular echo in the left scrotum, showing a 7.3mm × 5.8mm × 10mm substantial echo zone, surrounded by cystic anechoic area, the size of 53mm × 44mm × 32mm, can be seen within the cord-like strong echo