因为早期肿瘤一般能治愈，所以及早发现仍是主要目标。
Early detection is still a major aim, since early tumors can generally be cured.
目的探讨超声内镜诊断和治疗上消化道早期肿瘤的可靠性。
Objective To study the diagnosis and treatment of early upper gastrointestinal cancer by endoscopic ultrasonography (EUS).
癌症专家对于近几年关于常规筛查发现特定早期肿瘤的价值有第二种看法。
Cancer experts have been having second thoughts in recent years about the value of regular screening to detect certain types of cancer in its early stages.
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