PROBLEM TO BE SOLVED: To present information that enables a doctor to accurately diagnose to what degree CAD findings can be a reference for diagnosis.SOLUTION: A medical diagnosis support device comprises: a CAD observation generation part 102 generating a CAD observation by analyzing test data on an analyte; an image observation acquisition part 105 acquiring an image observation with respect to the test data by a doctor; an observation management part 103 acquiring information on a difference between the CAD observation and the image observation; and a reliability evaluation part 106 evaluating the reliability of the CAD observation based on the information on the difference between the CAD observation and the image observation.SELECTED DRAWING: Figure 1【課題】CAD所見がどの程度診断の参考になるのかを医師が適切に判断可能な情報として提示できるようにする。【解決手段】被検体の検査データを解析してCAD所見を生成するCAD所見生成部102と、当該検査データに対する医師による読影所見を取得する読影所見取得部105と、CAD所見と読影所見との差異に関する情報を取得する所見管理部103と、CAD所見と読影所見との差異に関する情報に基づいて、CAD所見の信頼性を評価する信頼性評価部106を備える。【選択図】図1