The cause of disease and pathology of stomach cancer

Cause of disease

The stomach cancer is the most familiar malignant tumor and be taken bad age with 40-60 years old for much see, the male is more than a female, about 3:1.Cause of disease still incompletely clear, probably have something to do with following factor.

(1)food factor:Take a meal smoked roast, preserve ～ in salt food and contain second nitrate and have antisepsis of additive of the food can induct stomach cancer.The fungi pollutes the bane of food to also allow of no to neglect.

(2)environment factor:The stomach cancer outbreak leads national at the dissimilarity, the of different region has obvious difference.This possibility and environment and life be used to relevant.Smoke cigarette to take place with stomach cancer to there is also certain relation.

(3)inherit a factor:BE more familiar than close relative in, the A type is bloody cluster of in the meantime of the outbreak lead the crowd higher than other blood types.

(4)disease factor:Stomach polyp, stomach ulcer, chronic the stomach inflammation atrophying sex can take place a cancer to change.

Pathology

Stomach cancer much the hair is at the stomach Dou the department is secondly department in the Ben door and take place in the stomach body department less.

(1)big body type

1)earlier period stomach cancer:Any pathological changes only invades and mucosa or mucosa lower in spite of have the stomach cancer to have no lymphoid knot to transfer all for the earlier period, performance for swell up type, shallow watch type and hollow type 3.

2)make progress period stomach cancer:Again call medium later period stomach cancer.Pointing the pathological changes has already exceeded mucosa lower stomach cancer and divides 3:Lump type:Tumor to stomach chamber outstanding, present polyp kind or mushroom-like in shape huge piece of, the surface often breaks Kui issue of blood, bad dead or is infected after the hair.Grow slowness, transfer a little bit late.

Ulcer type:The cancer hollow formation in the swollen center ulcerates, on all sides swell up, much occurrence bleed, bore hole.Transfer early, differ after preparing.

Gradually type:The cancer cell invades and the stomach wall whole layer, the stomach wall is stiff and present "the Ge is bag-like in shape".The malignant degree is the tallest, the lymph transfers early, the worst after preparing.

(2)organize the type in cent:There wasing a gland cancer, sticky liquid gland cancer, low mark turning a cancer and doing not dividing cancer etc. is among them known as the majority of the gland cancer, didn't divide cancer malignant degree tallest.

(3)transfer path

1)directly spread:Direct toward the stomach wall on all sides or deep department can directly invade stomach wall and close by organ and organization gradually.Can also follow the mucosa bottom layer lymphoid net to spread, infringe upon oesophagus upward next, invade downward and 12 bowels.

2)lymphoid transfer:BE mainly transfer path.The stomach cancer could take place to transfer in early days.And the tumor is gradually more deep and transfer more far, directly transfer a lock through the chest pipe bone ascend lymphoid knot, or transfer Qi through the liver circle ligaments week, all belong to a later period to transfer.

3)the blood line transfer:The later period of the stomach cancer often takes place a blood line to transfer.It is known as the majority of the liver, lung to see.

4)the belly cavity plant:The stomach cancer is after wearing deeply strach a film planted to peritoneum, big retina and other dirty machine surfaces.BE more familiar than ovary and basin bottom peritoneum.