今天的病人患有卵巢癌，經過手術化療以後四年。現在出現了在肝包膜上的一個腫瘤，靠近膈肌，化療後它不消失。對這樣一個病灶，我們可以採用冷凍消融，但是這個病灶消融的困難點是它緊靠膈肌和肺。所以我們要採用人工胸水的方法把肺隔開然後再進行冷凍消融，讓這個過程可以比較安全的進行。

　　Today we will perform cryosurgery in the tumor of hepatic envelope for this ovarian cancer patient. Four years after surgery， chemotherapy and radiotherapy， a tumor in hepatic envelope was found near diaphragm. In this case， we can adopt cryosurgery， but what troubles us is that the lesion is close to diaphragm and lung， we need to use artificial pleural effusion to separate the lesion and the lung then we can perform cryosurgery in a safer way.