A display control unit (120) includes an image display control unit (121) and a display-time-information display control unit (122). The image display control unit (121) sequentially displays a series of intracelomic images on an image display unit (141) based on image information of a series of intracelomic images stored in an image information storage unit (131) and display time information stored in a display-time-information storage unit (132). The display-time-information display control unit (122) displays on a display-time-information display unit (142), display-time information of an image which is displayed posterior in time series at least to an image displayed on the image display unit (141).
