This Master Final Work, focuses on the need to establish a more effective and precise search method in information sources published on the Internet, in relation with the interests of the user. A new method of contextualized search was defined, that begins from the data added by medical professionals in the electronic clinical history and results in a series of recommendations of articles of PUBMED. The reason to develop a method of contextualized search, that uses the electronic clinical history to recover key words and data of the context, is based on the fact that these data will serve to parameterize the final query that will be done in PUBMED: in this way the query can be adjusted and more precise, personalizing the query and improving the results of the search.