1. A medical information system for communicating a server and a client terminal, the medical information system comprising: a plurality of databases stored in said server and in which a plurality of kinds of medical data are respectively accumulated; an input section provided to said client terminal, the input section being operable by a user to input a query that includes a plurality of search items; a sorting section for sorting said plurality of search items into a plurality of search divisions corresponding to said plurality of databases, respectively, in accordance with a predetermined sorting rule; a search section for independently searching said plurality of databases by using the search item included in the corresponding search division; and a generation section for combining individual search results extracted respectively from said plurality of databases by said search section, to thereby generate a combined search result, wherein said plurality of databases include: an imaging test result database in which test images are accumulated; and a finding report storing database in which finding reports corresponding to respective test images and each including a structured-document are accumulated, wherein said search section searches said finding report storing database, for the search item sorted into the search division of a finding report to determine a target finding report in which the search item is described as a structured-element in said structured-document, wherein said generation section includes a test image extraction section for, based on test-image specific information attached to the target finding report obtained as said individual search result, extracting a target test image corresponding to said target finding report from said imaging test result database, and incorporating said target test image into said combined search result, and wherein said structured-document is described in a linguistic relation of different data elements.