A.未见明显X线改变
B.食管狭窄与正常食管段过渡、边缘整齐、无钡影残缺征
C.食管中下段可见虫蚀样或蚯蚓样充盈缺损
D.食腔不规则狭窄、充盈缺损，管壁蠕动消失，黏膜紊乱
E.食管下端成鸟嘴样或漏斗样狭窄