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Source1

{
  "resourceType": "CodeSystem",
  "id": "plvi-classification",
  "language": "en",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "url": "https://tx.hl7.lt/fhir/CodeSystem/plvi-classification",
  "version": "0.0.1",
  "name": "PlviClassificationLtLab",
  "title": "pLVI Classification",
  "status": "draft",
  "experimental": true,
  "date": "2026-03-29T11:59:27+00:00",
  "publisher": "Lithuanian Medical Library",
  "contact": [
    {
      "name": "Lithuanian Medical Library",
      "telecom": [
        {
          "system": "url",
          "value": "https://medicinosnk.lt"
        },
        {
          "system": "email",
          "value": "info@medicinosnk.lt"
        }
      ]
    }
  ],
  "description": "Peritumoral lymphovascular invasion (pLVI) 6-level classification for breast cancer pathology.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "urn:iso:std:iso:3166",
          "code": "LT"
        }
      ]
    }
  ],
  "caseSensitive": true,
  "content": "complete",
  "count": 6,
  "concept": [
    {
      "code": "plvi-0",
      "display": "pLVI-0: not detected",
      "definition": "No lymphovascular invasion detected"
    },
    {
      "code": "plvi-1",
      "display": "pLVI-1: spreading, otherwise unclassified",
      "definition": "Lymphovascular invasion present, otherwise not classified"
    },
    {
      "code": "plvi-2",
      "display": "pLVI-2: only in lymphatic vessels and small blood vessels (L)",
      "definition": "Present only in lymphatic vessels and small blood vessels"
    },
    {
      "code": "plvi-3",
      "display": "pLVI-3: only in veins (large, thick-walled blood vessels) (V)",
      "definition": "Present only in veins (large, thick-walled blood vessels)"
    },
    {
      "code": "plvi-4",
      "display": "pLVI-4: present in both lymphatic vessels and veins (LV)",
      "definition": "Present in both lymphatic vessels and veins"
    },
    {
      "code": "plvi-9",
      "display": "pLVI-9: undetectable/unknown",
      "definition": "Lymphovascular invasion status not determined or unknown"
    }
  ]
}