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上消化道同时性多原发癌少见，诊断中易与转移癌相混淆，而前者的治疗与第一原发癌相似，一般需要作根治性治疗，后者则往往是姑息性放疗或化疗，因此X线及临床的鉴别诊断就十分重要。我院199I～1996年发现经X线检查诊断，并为胃镜和／或手术病理证实的病例共25例，现复习文献
Simultaneous multiprimary cancer in the upper digestive tract is rare and is easily confused with metastatic cancer in diagnosis. The treatment of the former is similar to the first primary cancer and generally requires radical treatment. The latter is often palliative radiotherapy or chemotherapy. Therefore, X-ray and clinical differential diagnosis is very important. A total of 25 cases were diagnosed by X-ray examination and confirmed by gastroscopy and/or pathology during 199I~1996 in our hospital. Now we review the literature.