患儿男,16月,阴囊左侧内容物进行性肿大8月余,不发热,无局部外伤及红肿热痛史.体检:心肺无异常发现,腹平软,肝脾未及.阴囊内左侧内容物明显增大,约6×5×5cm,表面光滑,似有囊性感,透光试验可疑阳性,未触及附睾,皮肤无红肿,精索静脉不曲张.拟诊左侧鞘膜积液,于1990年4月30日在氯胺酮麻醉下手术.术中发现鞘膜内有淡黄色液体约10ml,左睾丸5.5×4×4cm, Children with male, 16 months, the contents of the left side of the scrotum progressive enlargement of more than August, no fever, no local trauma and swelling and pain history. Physical examination: no abnormal heart and lung findings, abdominal soft, liver and spleen not. The contents of the left significantly increased, about 6 × 5 × 5cm, smooth surface, like a cystic sexy, transparent test suspicious positive, did not touch the epididymis, no redness of the skin, varicocele is not varicose. Liquid, operated on ketamine under anesthesia on April 30, 1990. There was about 10 ml of light yellow liquid in the sheath and 5.5 × 4 × 4 cm of left testis,