胰腺癌侵及食管引起吞咽困难者相当少见,偶可由于胰体和/或胰尾癌直接扩展或继发于后纵隔淋巴结转移,血行播散至食管壁极为罕见。文献中曾有病例报告,钡餐检查发现胰腺癌使食管下端移位、侵蚀或梗阻,但如本文所见食管下端呈光滑的锥形狭窄和固定的直角外形这一X线表现,以前未被重视。作者认为这是X线诊断胰尾癌的有益线索。本文报告4例胰尾癌所致的食管下端直角狭窄,其最初及主要的症状均为吞咽困难。男女各2,年龄50—61岁。X线钡餐检查,食管下 Pancreatic cancer invading the esophagus caused by dysphagia is very rare, even due to pancreatic body and / or pancreatic tail cancer directly expanded or secondary to the mediastinal lymph node metastasis, blood line spread to the esophageal wall is extremely rare. Case reports have been reported in the literature. Barium meal examination found that pancreatic cancer shifts, erodes, or obstructs the lower esophagus. However, as seen here, the X-ray appearance of a smooth conical stenosis and a fixed right angle shape at the lower end of the esophagus has not been taken seriously before. . The authors believe this is a useful clue to X-ray diagnosis of pancreatic tail cancer. This article reports the right stenosis of the lower esophagus caused by pancreatic tail cancer in 4 cases. The initial and main symptoms are dysphagia. Two men and women, aged 50-61 years old. X-ray barium meal examination, under the esophagus