<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>