الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Early detection of gastrointestinal malignancy refers to application of tests that allow presump- tive diagnosis of various cancer in large sections of population, these tests should be sensitive enough to detect the majority of cases which will incr~ase the survival rates, these tests include: 1- Biochemical tests: These are based on identification of substances produced by tumoUr cells in the serum or other body fluids 8!1d excretin; they are: . I) Fecal occu.lt blood test: ~ For detection of colorectal neoplasia. 2) Fecatwin sensit’ive/Feca EIA : It is a specific test for h’:lman haemoglobin. J) Carcinoembryonic antigen (CEA): It is elevated in 66% of patients with gastric and colorectal carcinoma. 4) Foetal sulphoglycoprotein antigen (FSA):