[Endoscopic ultrasonography of the upper digestive tract]

Endoscopic ultrasonography is a useful combination of endoscopy and abdominal ultrasonography. It visualized in detail the wall of the digestive tract and is thus indicated for the diagnosis of pathological processes of the wall and its close surroundings, in particular the differential diagnosis of tumours, assessment of their size and operability. The method has become available also under our conditions. The present paper deals with its technique and informative value.