对１３６例经病理证实的贲门癌患者术前进行超声检查并预测手术可行性，然后与手术对比研究。发现Ｂ超对手术的预测较其它检查方法更为准确，且无痛苦，并可进行动态观察。认为Ｂ超对其它检查方法难以解决的腔外块影、腔外生长大小，以及胃壁的浸润大小则更为特长。 The preoperative ultrasound examination of 136 patients with pathologically confirmed cardiac cancers was performed to predict the feasibility of the operation, and then compared with surgery. It is found that the B-mode prediction of surgery is more accurate and painless than other examination methods, and dynamic observation can be performed. It is believed that the size of the extraluminal block, extraluminal growth, and infiltration of the stomach wall, which are difficult to resolve with other examination methods, are even more characteristic.