External fistula (morphologic abnormality)
http://purl.bioontology.org/ontology/SNOMEDCT/18802003
http://purl.bioontology.org/ontology/SNOMEDCT/236128002
http://purl.bioontology.org/ontology/SNOMEDCT/1085441000119105
http://purl.bioontology.org/ontology/SNOMEDCT/1086751000119105
http://purl.bioontology.org/ontology/SNOMEDCT/235642003
http://purl.bioontology.org/ontology/SNOMEDCT/431501001
http://purl.bioontology.org/ontology/SNOMEDCT/13538003
http://purl.bioontology.org/ontology/SNOMEDCT/70471001
http://purl.bioontology.org/ontology/SNOMEDCT/204769001
http://purl.bioontology.org/ontology/SNOMEDCT/236698009
http://purl.bioontology.org/ontology/SNOMEDCT/235790002
http://purl.bioontology.org/ontology/SNOMEDCT/85968009
http://purl.bioontology.org/ontology/SNOMEDCT/433229006
http://purl.bioontology.org/ontology/SNOMEDCT/233792008
http://purl.bioontology.org/ontology/SNOMEDCT/61018003
http://purl.bioontology.org/ontology/SNOMEDCT/36894006
http://purl.bioontology.org/ontology/SNOMEDCT/233782000
http://purl.bioontology.org/ontology/SNOMEDCT/235739003
http://purl.bioontology.org/ontology/SNOMEDCT/80641008
http://purl.bioontology.org/ontology/SNOMEDCT/236699001
http://purl.bioontology.org/ontology/SNOMEDCT/236611004
http://purl.bioontology.org/ontology/SNOMEDCT/63253009
http://purl.bioontology.org/ontology/SNOMEDCT/196767003
http://purl.bioontology.org/ontology/SNOMEDCT/472978005
http://purl.bioontology.org/ontology/SNOMEDCT/236678004
http://purl.bioontology.org/ontology/SNOMEDCT/432990004
http://purl.bioontology.org/ontology/SNOMEDCT/18317005
http://purl.bioontology.org/ontology/SNOMEDCT/99621000119104
http://purl.bioontology.org/ontology/SNOMEDCT/71449000
http://purl.bioontology.org/ontology/SNOMEDCT/197247001
http://purl.bioontology.org/ontology/SNOMEDCT/232413009
http://purl.bioontology.org/ontology/SNOMEDCT/235738006
http://purl.bioontology.org/ontology/SNOMEDCT/30437004
http://purl.bioontology.org/ontology/SNOMEDCT/28321004
http://purl.bioontology.org/ontology/SNOMEDCT/6670003
http://purl.bioontology.org/ontology/SNOMEDCT/118622000