A region-of-interest detection unit detects the region of interest including the target of interest among an observation target, from the medical image. An overlooking determination unit determines whether a user overlooks the target of interest. A monitor includes a first screen which displays a video of the medical image and displays the region of interest, and a second screen which is a screen different from the first screen and displays the region of interest. An overlooking notification control unit performs a control of an overlooking occurrence notification in a case where it is determined that the target of interest is overlooked.
