PROBLEM TO BE SOLVED: To provide a technique of allowing a doctor to efficiently determine the presence/absence of non-input information to be noted.SOLUTION: A diagnosis support apparatus which provides information for supporting medical diagnosis, comprises: a medical information obtaining unit adapted to obtain known information of medical information of a diagnosis target held in a database as already input information； a selection unit adapted to select, as presentation non-input information, non-input information to be presented from non-input information as medical information other than the already input information； a similar case obtaining unit adapted to obtain a case simultaneously including already input information and presentation non-input information from a case database as a similar case similar to a case of the diagnosis target； and a presentation unit adapted to present the presentation non-input information and the similar case.【課題】注目すべき未入力情報の有無を医師が効率的に判断できるようにする。【解決手段】医療診断を支援する情報を提供する診断支援装置であって、データベースに保持された診断対象の医用情報のうち、既知の情報を既入力情報として取得する医用情報取得部と、既入力情報以外の医用情報である未入力情報の中から提示すべき未入力情報を提示未入力情報として選択する選択部と、既入力情報と提示未入力情報とを同時に含む症例を、症例データベースから診断対象の症例と類似する類似症例として取得する類似症例取得部と、提示未入力情報と類似症例とを提示する提示部と、を備える。【選択図】 図１
