[Evaluation of colon diseases by using new method of extracorporeal ultrasonic examination during usual colon endoscopy].

Generally two types of ultrasonic colon examination method are carried out. One is extracorporeal ultrasonographic examination (US). And another is endoscopic ultrasonographic examination (EUS). US is technically easy but is difficult to take good image of colon diseases. EUS can give us good and sufficient informations. But it is technically difficult and gives much trouble to patients. During usual endoscopy, we have tried extracorporeal ultrasonic examination by filling de-aired water around the diseased colon area. With this new method, we could easily identify the disease and got much better picture than usual US. And this new method gave almost no trouble and pain to examinees in comparison with EUS.