Finally,echocardiogram features and some operative skills were mentioned. 文中提出了该病的超声心动图特征性表现和一些操作技巧。
Thirdly, considering both difficulties of resection and his operation skill, the surgeons did not dare to enlarge resection scope suitably, so resections were not actually radical. 主观上手术医生因操作技巧问题不敢轻易扩大切除范围而导致手术不彻底的可能。
