Endoscopic Surgical Centre of MC Erebouni has been replenished with a new-generation endoscopic ultrasound system. New diagnostic device of the Japanese company Hitachi 2021 makes it possible to combine endoscopic examination with ultrasound diagnostics, obtaining an ultra-precise image with minimally invasive intervention. Endoscopic ultrasound diagnostics in modern medicine is considered the leading diagnostic method for lesions of the pancreas, liver, bile ducts and oncological diseases. One of the main advantages, if necessary, is to obtain a biopsy from the tumor during the study for further histological examination. Until now, such an intervention has not been performed not endoscopically, but surgically.