Pathology change sees esophagus mucous membrane hyperaemia, oedema, become fragile, easy haemorrhage, very person erosion and ulcer, stricture of esophagus of as a result, contracture.

• 病理改变可见食管粘膜充血、水肿、变脆、易出血，甚者糜烂和溃疡，以致食管狭窄、挛缩。