X-rays with barium contrast of the upper GI tract can be useful to identify complications, like ulcers or esophageal stenosis.

上消化道钡餐造影有助于鉴别并发症，比如溃疡或食管狭窄。

X-rays with barium contrast of the upper GI tract can be useful to identify the location of the cancer and complications like ulcers or esophageal stenosis.

上消化道的X线钡餐检查可有效确认食管癌的部位以及是否有破溃、食管狭窄等并发症。

Since this is continuously happening, the scar becomes bigger and bigger, and together with the edema, they turn the wall thicker, and the lumen through which the food passes becomes smaller - which is called esophageal stenosis.

由于这种情况不断发生，疤痕组织变得越来越大，并伴随水肿，它们会使壁变厚，食物通过的腔变小，这就是食管狭窄。