[Evolution of ultrasonographic diagnosis for early cancer]

Ultrasonography is the best method for the screening of early cancer of abdominal parenchymatius organ. No dead angle had been in this field with the convex prove. The compressing method with this convex probe to the two linear pancreatic duct is usefull to detect the clue for diagnosing the early or occult cancer of pancreas. New other hopeful method for the diagnose of early cancer of abdominal parenchymatous organ are a few color Doppler technique, such as power mode, contrast enhanced method and harmonic imaging.