doctor sergei anatolyevich karpishchenko doctor of medical sciences and professor and sergei anatolyevichplain to us unreasonably what the matter was brought by this device, this is a board, this is a video camera. now i want our camera to show us the screen. here it is on the screen you now see here, i can show you now. here are the lights in our studio. here is my guest. and here i am, so a here is a man's head. so, i’ll put it up and ask you to show us simply so that we understand how a tumor can be removed through the nose with an endoscope , the way we work in the operating room can only be shown in the operating room, because our operating room looks like. the spacecraft instrumentation is much larger, including a navigation station, an endoscope stand, and an angle with endoscopes with different angles of view. so that we can look at this cinderella in the nose, we can, yes, through the hole, it is tough in a person. the only thing in the nose is soft it is subject further. we work uh in a very narrow area. uh, a bony tight gap where we're restricted. if from the outside it may see