{
  "id": 4678,
  "label": "chondroblastic osteosarcoma",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0002627",
  "properties": {
    "xrefs": [
      "DOID:3372",
      "GARD:0023195",
      "ICDO:9181/3",
      "MEDGEN:79013",
      "NCIT:C4021",
      "ONCOTREE:CHOS",
      "UMLS:C0279603"
    ],
    "synonyms": [
      "chondroblastic osteogenic sarcoma",
      "chondroblastic osteosarcoma",
      "chondroblastic osteosarcoma (morphologic abnormality)",
      "CHOS"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      },
      {
        "ref": "MONDO:0003900",
        "name": "connective tissue disorder"
      }
    ],
    "definition": "An osteosarcoma characterized by the presence of atypical cartilage of variable cellularity. It may or may not be associated with the presence of myxoid areas or focal bone formation."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 4682,
      "label": "conventional osteosarcoma",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        4680
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:3378",
          "DOID:7602",
          "GARD:0023198",
          "ICDO:9186/3",
          "ICDO:9195/3",
          "MEDGEN:1843980",
          "NCIT:C35870",
          "UMLS:C5848244"
        ],
        "synonyms": [
          "central osteosarcoma",
          "conventional central osteosarcoma",
          "conventional osteosarcoma",
          "intracortical osteogenic sarcoma",
          "intracortical osteosarcoma",
          "intracortical osteosarcoma (morphologic abnormality)",
          "medullary osteosarcoma"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0003900",
            "name": "connective tissue disorder"
          }
        ],
        "definition": "A high grade malignant bone-forming mesenchymal neoplasm producing osteoid. The tumor arises from the medullary portion of the bone. It affects the long bones and most commonly, the distal femur, proximal tibia, and proximal humerus. Pain with or without a palpable mass is the most common clinical presentation. It usually has an aggressive growth and may metastasize through the hematogenous route. The lung is the most frequent site of metastasis."
      },
      "child_count": 4,
      "reference_id": "MONDO:0002631"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 4682,
      "label": "conventional osteosarcoma"
    }
  ]
}