1. A diagnosis support apparatus operably coupled to a medical examination data acquisition apparatus, the diagnosis support apparatus comprising: a processor; and a memory having stored thereon instructions which, when executed by the processor, cause the processor to: obtain examination data of an object from the medical examination data acquisition apparatus; process the examination data of the object to extract diagnosis support information; store medical examination history of the object in a storage unit; calculate an onset probability of a lesion based on the medical examination history of the object; determine whether or not the object is taking a first medical examination based on the stored medical examination history of the object, wherein it is determined that the object is taking the first medical examination if the medical examination history of the object does not exist in the storage unit, wherein, in a case where it is determined that the object is taking the first medical examination, a lesion of a size in a first range is extracted from the examination data, and wherein, in a case where it is determined that the object is not taking the first medical examination, a lesion of a size in a second range smaller than the first range is extracted from the examination data, and wherein the second range is based on the calculated onset probability; and control the medical examination data acquisition apparatus to change an acquisition parameter in the medical examination data acquisition apparatus based on the calculated onset probability.