Abstract
Objective The aim of this study was to evaluate the clinical value and the possibilities of measuring the serum levels of pepsinogen I (PG I ) and careineembryonic antigen (CEA) in 402 patients with gastric ulcer.Methods The patients with gastric ulcer were all confirmed by either operation or gastrofiberscope,and divided into two groups,benign and malignant gastric ulcer.After comparing the relationship between the patients'clinical appearance and the Radioimmunoaasay(RIA) results,(CEA and PG I ).Results There were 73 patients were onfirmed malignant gastric ulee in 402 patients.The positive rate of PG was 52.05% (38/73).The positive rate of CEA was 64.38% (47/73).Both were 30.14% (22/73).Then there were 63(63/73) patients who was positive in the combined determination.Solo determination's positive rate of CEA and PG were significantly different from the combined determination.(P＜0.05 and 0.01) Conclusions Feasibility and the necessity of combined determination were evaluated.Compared with solo determination,for patients with malignant gastric ulcer,it was more sensitive to determine and analysis the serum levels of PG I and CEA sYnthetically.So it is recommended to popularize the combined determination of serum PG I and CEA in clinical distinctive diagnosis of benign and malignant gastric ulcer. Key words: Pepsinogon; Careinoembryonic antigen ; Immunoradiometric assay; Stomach ulcer
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