1. A medical diagnostic supporting apparatus for providing information which supports a medical diagnosis, the medical diagnostic supporting apparatus comprising: a medical image input unit configured to input a medical image that is a target of the medical diagnosis; a medical information acquisition unit configured to acquire one or more pieces of medical information relating to the medical image as entered information; an image feature amount acquisition unit configured to acquire an image feature amount from the medical image; a presented not-entered information candidate selection unit configured to select a plurality of pieces of not-entered information associated with the image feature amount from not-entered information that is medical information other than the entered information as presented not-entered information candidates that are candidates for presentation; an inference unit configured to acquire an inference result using the entered information and each of the presented not-entered information candidates; a presented not-entered information selection unit configured to select presented not-entered information from the presented not-entered information candidates based on the plurality of inference results; and a presentation unit configured to present the presented not-entered information selected by the presented not-entered information selection unit.