This example demonstrates a cardiac myxoma represented as one morphologic entity spanning the left atrium and left ventricle. (id = "cardiac-myxoma")

<?xml version="1.0" encoding="UTF-8"?>

<!--  This example demonstrates a single morphology spanning multiple included anatomical
 structures.  --><BodyStructure xmlns="http://hl7.org/fhir">
  <id value="cardiac-myxoma"/> 
  <identifier> 
    <system value="http://example.org/fhir/bodystructure-identifiers"/> 
    <value value="M1"/> 
  </identifier> 
  <spanningMorphology> 
    <text value="Cardiac myxoma"/> 
  </spanningMorphology> 
  <includedStructure> 
    <structure> 
      <text value="Left atrium"/> 
    </structure> 
  </includedStructure> 
  <includedStructure> 
    <structure> 
      <text value="Left ventricle"/> 
    </structure> 
  </includedStructure> 
  <description value="A cardiac myxoma originating in the left atrium and extending through the mitral
   valve into the left ventricle."/> 
  <patient> 
    <reference value="Patient/example"/> 
  </patient> 
</BodyStructure>