?:definition
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A natural or surgically-induced connection between tubular structures in the body. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C15609\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C15609\' NCI Thesaurus)
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