{
  "id": 6738,
  "label": "chondroblastoma",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0004997",
  "properties": {
    "xrefs": [
      "DOID:2649",
      "EFO:0000331",
      "GARD:0006047",
      "HP:0030432",
      "ICDO:9230/0",
      "MEDGEN:40270",
      "MESH:D002804",
      "NANDO:2200051",
      "NCIT:C2945",
      "ONCOTREE:CHBL",
      "UMLS:C0008441"
    ],
    "synonyms": [
      "chondroblastoma",
      "chondroblastoma (disease)",
      "CHBL"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      },
      {
        "ref": "MONDO:0003900",
        "name": "connective tissue disorder"
      }
    ],
    "definition": "A benign, chondroid-producing, well-circumscribed, lytic neoplasm usually arising from the epiphysis of long bones. It is characterized by the presence of chondroblasts, osteoclast-like giant cells, chondroid formation, calcification, and mitotic activity. In aggressive cases, there is rearrangement of the 8q21 chromosome band. It occurs most frequently in children and young adults and rarely metastasizes."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 3036,
      "label": "bone benign neoplasm",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        3054,
        18958
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:0060094",
          "GARD:0022813",
          "ICD9:213.9",
          "MEDGEN:146337",
          "NCIT:C4880",
          "SCTID:92027006",
          "UMLS:C0684516"
        ],
        "synonyms": [
          "benign bone neoplasm",
          "benign bone tumor",
          "benign bone tumour",
          "benign neoplasm of bone",
          "benign neoplasm of the bone",
          "benign osseous neoplasm",
          "benign osseous tumor",
          "benign osseous tumour",
          "benign tumor of bone",
          "benign tumor of the bone",
          "benign tumour of bone",
          "benign tumour of the bone",
          "bone tissue benign neoplasm"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0003900",
            "name": "connective tissue disorder"
          }
        ],
        "definition": "A neoplasm that arises from the bone or articular cartilage and does not invade adjacent tissues or metastasize to other anatomic sites."
      },
      "child_count": 38,
      "reference_id": "MONDO:0000631"
    },
    {
      "id": 21426,
      "label": "benign chondrogenic neoplasm",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        6887,
        21425
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "MEDGEN:208867",
          "NCIT:C8592",
          "SCTID:722690001",
          "UMLS:C0852519"
        ],
        "synonyms": [
          "benign cartilaginous neoplasm",
          "benign cartilaginous tumor",
          "benign cartilaginous tumour",
          "benign chondrogenic neoplasm",
          "benign chondrogenic tumor",
          "benign chondrogenic tumour",
          "benign neoplasm of cartilage",
          "benign neoplasm of the cartilage",
          "benign tumor of cartilage",
          "benign tumor of the cartilage",
          "benign tumour of cartilage",
          "benign tumour of the cartilage",
          "chondrogenic neoplasm, benign"
        ],
        "definition": "A non-metastasizing cartilaginous matrix-producing neoplasm characterized by the presence of neoplastic chondrocytes. Representative examples include osteochondroma and chondroma."
      },
      "child_count": 6,
      "reference_id": "MONDO:0024470"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 3036,
      "label": "bone benign neoplasm"
    },
    {
      "id": 21426,
      "label": "benign chondrogenic neoplasm"
    }
  ]
}