{
  "resourceType" : "Observation",
  "id" : "RECISTTargetLesionObservationExample",
  "meta" : {
    "profile" : ["https://nshr-uat.sha.go.ke/fhir/StructureDefinition/nccp-recist-target-lesion-observation"]
  },
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>RECIST target lesion measurement of left axillary lymph node at week 8 (after 2 AC cycles): 18 mm</p></div>"
  },
  "extension" : [{
    "url" : "https://nshr-uat.sha.go.ke/fhir/StructureDefinition/nccp-recist-target-lesion-id-extension",
    "valueString" : "TL-001"
  },
  {
    "url" : "https://nshr-uat.sha.go.ke/fhir/StructureDefinition/nccp-recist-timepoint-extension",
    "valueCode" : "WEEK-8"
  }],
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "imaging",
      "display" : "Imaging"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "https://nshr-uat.sha.go.ke/fhir/CodeSystem/sha-interventions-cs",
      "code" : "SHA-IMAGING",
      "display" : "SHA: Oncology Diagnostic Imaging"
    }]
  },
  "subject" : {
    "reference" : "Patient/example-patient"
  },
  "effectiveDateTime" : "2026-03-15",
  "performer" : [{
    "reference" : "Practitioner/example-practitioner"
  }],
  "valueQuantity" : {
    "value" : 18,
    "unit" : "mm",
    "system" : "http://unitsofmeasure.org",
    "code" : "mm"
  },
  "bodySite" : {
    "coding" : [{
      "system" : "https://nshr-uat.sha.go.ke/fhir/CodeSystem/cancer-primary-site-cs",
      "code" : "BREAST",
      "display" : "Breast"
    }]
  }
}