{
  "id": 19902,
  "label": "absence of innominate vein",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0020443",
  "properties": {
    "xrefs": [
      "GARD:0019655",
      "MEDGEN:1640707",
      "Orphanet:99112",
      "UMLS:C4707656"
    ],
    "synonyms": [
      "absence of brachiocephalic vein"
    ],
    "categories": [
      {
        "ref": "MONDO:0004995",
        "name": "cardiovascular disorder"
      }
    ],
    "definition": "Absence of innominate vein is a rare congenital anomaly of the great veins characterized by absence of the left brachiocephalic vein (or innominate vein), resulting in an anomalous venous vasculature. Patients are usually asymptomatic and the anomaly is typically discovered intraoperatively. An association with persistence of left superior vena cava, permanent levoatrial cardinal vein or anomaly of the inferior vena cava has been reported in some cases."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 19565,
      "label": "congenital anomaly of superior vena cava",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7065,
        20383
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0019275",
          "ICD9:747.49",
          "MEDGEN:539589",
          "Orphanet:95498",
          "SCTID:70195006",
          "UMLS:C0265928",
          "icd11.foundation:1459500132"
        ],
        "synonyms": [
          "congenital anomaly of superior caval vein",
          "congenital anomaly of the SVC"
        ],
        "categories": [
          {
            "ref": "MONDO:0004995",
            "name": "cardiovascular disorder"
          }
        ]
      },
      "child_count": 14,
      "reference_id": "MONDO:0019829"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 19565,
      "label": "congenital anomaly of superior vena cava"
    }
  ]
}