{
  "id": 18457,
  "label": "osteonecrosis of the jaw",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0018378",
  "properties": {
    "xrefs": [
      "GARD:0021663",
      "ICD9:733.45",
      "MEDGEN:751019",
      "NCIT:C63924",
      "Orphanet:399293",
      "SCTID:441809006",
      "UMLS:C2711248"
    ],
    "synonyms": [
      "ONJ",
      "jaw osteonecrosis",
      "osteonecrosis of jaw"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      }
    ],
    "definition": "An area of necrotic bone in the mandible or maxilla."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 18454,
      "label": "secondary avascular necrosis",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        18453
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0021659",
          "MEDGEN:1842971",
          "Orphanet:399169",
          "UMLS:C5680036"
        ],
        "synonyms": [
          "secondary AVN"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          }
        ]
      },
      "child_count": 6,
      "reference_id": "MONDO:0018374"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 18454,
      "label": "secondary avascular necrosis"
    }
  ]
}