食管与贲门癌预后比较恶劣,手术创伤又很大,因此手术前对肿瘤病期正确评价,以便确定哪些病人适合做根治性手术,哪些适合接受姑息性非手术治疗。微小创伤性外科手术的问世更使术前对肿瘤患者精确分期显得重要。 目前传统的术前评价方法包括CT、B超,内窥镜检查等等尚不能精确判断肿瘤的周围重要器官局部侵犯的情况及较小的肝脏、腹主动脉周围淋巴结转移和腹腔种植的情况。病人若有这些情况则表明肿瘤已不可根治,实际情况是目前仍有15％的病人仅仅因为需要确定肿瘤的病期而接受开胸或剖腹探查手术。 腹腔镜下超声诊断装置(LLU)的出现以其高分辨 The prognosis of esophageal and cardia cancers is rather poor, and the surgical trauma is very large. Therefore, the tumor disease period is evaluated before surgery to determine which patients are suitable for radical surgery and which are suitable for palliative non-surgical treatment. The advent of minimally invasive surgery makes it more important to accurately grade patients before surgery. At present, traditional preoperative evaluation methods, including CT, B-ultrasonography, endoscopy, etc., can not accurately determine the local invasion of the surrounding vital organs of the tumor and the conditions of smaller liver, abdominal aorta lymph node metastasis and abdominal planting. If the patient has these conditions, it indicates that the tumor has not been eradicated. The actual situation is that 15% of patients are undergoing thoracotomy or exploratory laparotomy simply because they need to determine the stage of the tumor. Laparoscopic ultrasound diagnostic device (LLU) with its high resolution