胃镜检查还可以发现早期癌症，并且可以通过对可疑部位的活组织检查区分癌和非癌性病变。
Upper endoscopy can detect early cancer and can distinguish between cancerous and non-cancerous conditions by performing biopsies of suspicious areas.
方法使用宽频凸阵探头、对输尿管可疑部位、变化进行二维灰阶、彩色和能量多普勒扫描。
Methods Using broadband convex array probe, to scan suspicious area of the ureter, changes of two-dimensional gray scale, with color and power Doppler.
所有这些都是HIV可能潜伏数年，并在在患者停止服用抗感染药物后造成病毒反弹的可疑部位。
All these places are suspected "reservoirs" where HIV can hide out for years, to rebound in patients who stop taking drugs that suppress the infection.
方法对25例有明确异物吞入史，但X线探查为阴性的患者，运用超声高、低频探头对可疑部位进行探查定位。
Methods 25 patients who had foreign body inside the digestive tract but the X-ray exploration was negative, were exarnined with ultrasonic inspection with high and Iow frequency detecting head.
那些无明显原发病灶的病人，应对最可疑的部位进行活检。
In patients with no obvious primary site, the most accessible site should be biopsied.
那些无明显原发病灶的病人，应对最可疑的部位进行活检。
In patients with no obvious primary site, the most accessible site should be biopsied.
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