{
  "id": 7218,
  "label": "polycythemia",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0005571",
  "properties": {
    "xrefs": [
      "DOID:8432",
      "EFO:0005804",
      "HP:0001901",
      "MEDGEN:18552",
      "MESH:D011086",
      "MedDRA:10036051",
      "NCIT:C26863",
      "Orphanet:98427",
      "UMLS:C0032461"
    ],
    "synonyms": [
      "polycythemia",
      "polycythemia (disease)"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      },
      {
        "ref": "MONDO:0005046",
        "name": "immune system disorder"
      },
      {
        "ref": "MONDO:0005570",
        "name": "hematologic disorder"
      }
    ],
    "definition": "Abnormally high mass or concentration of red blood cells in the blood, either due to an increase in erythropoiesis or a decrease in plasma volume."
  },
  "isLeaf": false,
  "isRoot": false,
  "child_count": 5,
  "parents": [
    {
      "id": 5177,
      "label": "bone marrow disorder",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        6778,
        6893,
        7217
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:4961",
          "GARD:0023414",
          "ICD9:289.9",
          "MEDGEN:892905",
          "MESH:D001855",
          "NCIT:C34433",
          "SCTID:127035006",
          "UMLS:C4021634"
        ],
        "synonyms": [
          "bone marrow disease",
          "bone marrow disease or disorder",
          "bone marrow disorder",
          "disease of bone marrow",
          "disease or disorder of bone marrow",
          "disorder of bone marrow"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "Any disease of the bone marrow."
      },
      "child_count": 21,
      "reference_id": "MONDO:0003225"
    }
  ],
  "children": [
    {
      "id": 3363,
      "label": "familial polycythemia",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        5714,
        7218
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:10780",
          "GARD:0022884",
          "ICD10CM:D75.0",
          "MEDGEN:57520",
          "NANDO:2100187",
          "NANDO:2200644",
          "NCIT:C26955",
          "OMIMPS:133100",
          "UMLS:C0152264"
        ],
        "synonyms": [
          "erythrocytosis, familial",
          "familial polycythemia",
          "hereditary polycythemia (disease)",
          "primary polycythemia"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "Polycythemia that occurs in groups of related individuals."
      },
      "child_count": 16,
      "reference_id": "MONDO:0001115"
    },
    {
      "id": 3478,
      "label": "polycythemia neonatorum",
      "isLeaf": true,
      "isRoot": false,
      "parents": [
        7218
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:11242",
          "GARD:0022903",
          "ICD10CM:P61.1",
          "ICD9:776.4",
          "MEDGEN:78794",
          "NCIT:C27069",
          "SCTID:32984002",
          "UMLS:C0272153"
        ],
        "synonyms": [
          "neonatal polycythemia",
          "polycythemia neonatorum",
          "polycythemia of the newborn",
          "plethora of newborn"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "A condition in which the red blood cell level is greater than established reference ranges in a newborn."
      },
      "child_count": 0,
      "reference_id": "MONDO:0001238"
    },
    {
      "id": 4524,
      "label": "acquired polycythemia",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7218
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:2834",
          "GARD:0023137",
          "ICD9:289.0"
        ],
        "synonyms": [
          "acquired polycythemia",
          "acquired polycythemia (disease)"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "An instance of polycythemia that is acquired during the lifetime of the individual."
      },
      "child_count": 1,
      "reference_id": "MONDO:0002438"
    },
    {
      "id": 6361,
      "label": "physiological polycythemia",
      "isLeaf": true,
      "isRoot": false,
      "parents": [
        7218
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:8431",
          "GARD:0024070",
          "MEDGEN:163545",
          "NCIT:C27311",
          "UMLS:C0856817"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "Polycythemia that is not pathologic."
      },
      "child_count": 0,
      "reference_id": "MONDO:0004563"
    },
    {
      "id": 19740,
      "label": "secondary polycythemia",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7218
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0019467",
          "ICD10CM:D75.1",
          "MEDGEN:231144",
          "MedDRA:10036062",
          "NCIT:C27178",
          "Orphanet:98428",
          "UMLS:C1318533"
        ],
        "synonyms": [
          "secondary erythrocytosis",
          "secondary polycythemia"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0005046",
            "name": "immune system disorder"
          },
          {
            "ref": "MONDO:0005570",
            "name": "hematologic disorder"
          }
        ],
        "definition": "Secondary polycythemia is an elevated absolute red blood cell mass caused by enhanced stimulation of red blood cell production by an otherwise normal erythroid lineage that may be congenital or acquired (congenital secondary polycythemia and acquired secondary polycythemia)."
      },
      "child_count": 2,
      "reference_id": "MONDO:0020115"
    }
  ],
  "roots": [
    {
      "id": 5177,
      "label": "bone marrow disorder"
    }
  ]
}