Anemia
Stool Guaiac test for the detection of occult blood
Elevated serum level of carcioembryonic antigen (CEA)
Elevated serum level of oncofetal antigen
Upper G.I. series is diagnostic
Ultrasound helpfull in metastatic disease
C.T. scan for detection of distant metastases
M.R.I. for detection of systemic metastases
Gastroscopy with multiple biopsies & brush cytology
Cytologic study of gastric aspiration