【摘要】 本文应用放免法同时检测33例胃癌和45例胃良性病变的CEA和CA₅₀血清值发现:胃癌组的CA₅₀,CEA血清值较良性胃病组均有显著性差异（P<0.05）。认为CA₅₀、CEA的血清值均可做为胃癌诊断中有用的辅助指标。进一步比较这两种抗原,胃癌中CA₅₀的敏感性最高为63.34％,明显优于CEA的30.31％。本组CA₅₀血清值与胃癌的大小,转移,病理分型,均无显著相关性（P>0.05）。而血清CEA在胃癌远处转移时有显著升高（P<0.05）,可借此判断胃癌有否远处转移。更多还原

【Abstract】 Serum CEA and CA₅₀ content have been measured by means of radio-immunoassay in 33 patients with gastric disease. The result shows thatthe serum CEA and CA₅₀ content of patients with gastric cancer are. higher than in those with nonmalignant gastric disease （P<0.05）. It holds thatboth serum CEA and CA₅₀ content may be useful indexes in the diagnosis of gastric cancer. After further comparsion, we found that the diagnostic sensitivity of CA₅₀ （63.34％） to gastric cancer is higher than that of CEA （30.31％）. No relation has been found between serum CA₅₀ content and the esistence of metastasis,pathologic type and the size of gastric lesion （P>0.05）. But the serum CEA content in patients with distant metastasis increased more significantly than that in patients without metastasis （P<0.05）, it seems therefore to have practical diagnostic value.更多还原