Esophageal cancer is a common tumor originated from multi-point.Lymph node metastases has been demonstrated by regional,two directivity,continuity and jumping processing.

• 食管癌是一种常见的肿瘤,具有癌灶多点起源,淋巴结转移呈区域性、双向性、连续性、跳跃性的特点。