1. A diagnostic result explanation report generating apparatus, comprising: a diagnostic information storing section for storing diagnostic information, which includes patient specifying information that specifies a patient and diagnostic results for the patient; a comment information storing section for storing comment information regarding various diagnostic results; a template storing section for storing explanation templates having insertion regions, into which at least a portion of the diagnostic information and the comment information can be inserted, prepared for each of the various diagnostic results; an input section, for inputting patient specifying information of a patient regarding whom a diagnostic result explanation report is to be generated; a diagnostic information obtaining section, for obtaining diagnostic information for a patient from the diagnostic information storing section, based on the input patient specifying information; a template obtaining section, for obtaining an explanation template which is prepared for a diagnostic result, based on a diagnostic result included in the obtained diagnostic information; a comment information obtaining section, for obtaining comment information from the comment information storing section; and a diagnostic result explanation generating section, for inserting necessary diagnostic information and comment information obtained from the diagnostic information storing section and the comment information storing section into the obtained explanation template, to generate a diagnostic result explanation report.