The disease before cancer suffers from is to show with esophagus cancer forms the esophagus difficulty that has particular concern to suffer from, it is independent disease. Basically have: 　
(Disease of 1) cardia convulsion: Because this disease feeds clump of the nerve between the flesh of tube wall to be short of be like or metamorphic and pose obstacle of function of esophagus nerve muscle. After food enters esophagus, abate or response of diastole of gastric cardia ministry is not sensitive, reason food cannot enter a stomach inside, cause the retention inside esophagus antrum and the mucous membrane slow sexual excitement of generation and inflammation are the concerned ingredient that esophagus cancer produces. 　
(2) esophagus cracks aperture hernia: Because esophagus cracks Kong Kuo to reach heighten of force of celiac internal pressure greatly,be, make the celiac viscera such as the stomach enters mediastinum. Because gastric juice is returned,esophagus cracks aperture hernial patient flow and cause return esophagitis drifting a gender and esophagus ulcer, bring about esophagus stricture as a result of long-term esophagitis. Esophagus cracks aperture hernia development to be cancer, need to pass proper time, incidence of a disease is 32% ～ of 0  10% differ. 　
(3) esophagus resting room: Canceration of esophagus resting room, see at pharynx esophagus rests more room, but also see the resting room at other position. Canceration produces Yu Qi indoor or resting room mouth. Because rest,resting room canceration basically is platoon of room ministry esophagus is decelerated for nothing, rudimental alimental stimulation makes rest indoor or resting room mouth produces chronic inflammation and ulcer, and make canceration happening. 　
(4) esophagus polyp and tit shape tumour: Be dash forward to the benign tumor that grows inside antrum, scarcer. Tumor is linked together with the base of a fruit or short handle and esophagus wall, grow rate is slower, but this kind of case of illness is incidental canceration. 　
The disease before afore-mentioned cancer suffers from have closer relationship with esophagus cancer. According to document report, difference of its canceration rate is very big, the degree that the time that this may have presence with the disease before cancer, esophagus discharges empty obstacle and the case that get exciting place have particular concern, but more important is a decision at whether having concurrent pathology changes, include blaze of atrophy of inflammation, ulcer, narrow, mucous membrane, mucous membrane to wait. 　

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