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随着医学技术的发展，胰腺癌的诊断手段日益增多．如特殊器械检查和分子生物学技术．并已广泛应用于临床。并且这些方法的有效性在临床实践中得到了证实和发展。超声波（US）检查是检测和术前评估胰腺恶性肿瘤的主要手段之一。最近开展的内窥镜超声（EUS）诊断胰腺癌，不仅有B
With the development of medical technology, the diagnosis of pancreatic cancer is increasing. Such as special equipment inspection and molecular biology techniques. And has been widely used in clinical. And the effectiveness of these methods has been confirmed and developed in clinical practice. Ultrasound (US) examination is one of the main methods to detect and preoperatively evaluate pancreatic malignancy. Recently performed endoscopic ultrasound (EUS) for the diagnosis of pancreatic cancer, not only B