1. A medical information display apparatus comprising: a timeline display means that displays a timeline representing a time axis on a display device; a timeline selection input receiving means that receives a selection input selecting a predetermined period on the timeline; an electronic medical record information retrieval means that obtains a set of pieces of electronic medical record information by retrieving, from an electronic medical record storage means that stores a multiplicity of pieces of electronic medical record information, electronic medical record information about examination and treatment received by a predetermined person to be examined during the selected period; an examination target region extraction means that extracts all of at least one examined region that is recorded in the set of pieces of electronic medical record information; and an examined-region position display means that displays an external view image representing an external view of the person to be examined on the display device, and superimposes a mark representing each of the extracted all of at least one examined region at a position corresponding to the examined region in the external view image.