{
  "id": 21557,
  "label": "optic tract astrocytoma",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0024649",
  "properties": {
    "xrefs": [
      "GARD:0025445",
      "MEDGEN:237052",
      "NCIT:C7533",
      "UMLS:C1336971"
    ],
    "synonyms": [
      "astrocytoma (excluding glioblastoma) of optic tract",
      "optic tract astrocytoma",
      "optic tract astrocytoma (excluding glioblastoma)",
      "visual pathway astrocytoma"
    ],
    "categories": [
      {
        "ref": "MONDO:0005071",
        "name": "nervous system disorder"
      },
      {
        "ref": "MONDO:0024458",
        "name": "disorder of visual system"
      }
    ],
    "definition": "An astrocytoma that affects the optic tract. This condition can be seen in association with neurofibromatosis 1. It is most commonly seen in the pediatric age group."
  },
  "isLeaf": false,
  "isRoot": false,
  "child_count": 2,
  "parents": [
    {
      "id": 3050,
      "label": "sensory system cancer",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7479
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:0060116"
        ],
        "synonyms": [
          "cancer of sensory system",
          "malignant neoplasm of sensory system",
          "malignant sensory system neoplasm",
          "sensory system cancer"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          }
        ],
        "definition": "A malignant neoplasm involving the sensory system"
      },
      "child_count": 7,
      "reference_id": "MONDO:0000649"
    },
    {
      "id": 5133,
      "label": "diencephalic astrocytomas",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        4814,
        7155,
        20687
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:4855",
          "GARD:0023393",
          "MEDGEN:272542",
          "NCIT:C5128",
          "UMLS:C1333284"
        ],
        "synonyms": [
          "astrocytoma (excluding glioblastoma) of diencephalon",
          "astrocytoma of diencephalon",
          "astrocytoma of the diencephalon",
          "diencephalic astrocytoma",
          "diencephalon astrocytoma",
          "diencephalon astrocytoma (excluding glioblastoma)"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          }
        ],
        "definition": "A astrocytoma that involves the diencephalon."
      },
      "child_count": 9,
      "reference_id": "MONDO:0003169"
    },
    {
      "id": 16766,
      "label": "optic pathway glioma",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        4014,
        17197,
        20287,
        20429
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0004107",
          "MEDGEN:162950",
          "NCIT:C8567",
          "Orphanet:2086",
          "UMLS:C0796418",
          "icd11.foundation:1000103370"
        ],
        "synonyms": [
          "glioma of optic tract",
          "glioma of the optic tract",
          "glioma of the visual pathway",
          "glioma of visual pathway",
          "optic pathway glioma",
          "optic tract glioma",
          "visual pathway glioma"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          },
          {
            "ref": "MONDO:0024458",
            "name": "disorder of visual system"
          }
        ],
        "definition": "Optic pathway glioma (OPG) is a benign tumor that develop along the optic nerve (chiasm, tracts, and radiations) characterized by impairment or loss of vision and may be accompanied by diencephalic symptoms such as reduced growth and alteration in sleeping patterns. OPG are often linked to neurofibromatosis type 1 (NF1)."
      },
      "child_count": 8,
      "reference_id": "MONDO:0016167"
    }
  ],
  "children": [
    {
      "id": 5182,
      "label": "optic nerve astrocytoma",
      "isLeaf": true,
      "isRoot": false,
      "parents": [
        4519,
        5183,
        21557
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:4991",
          "GARD:0023416",
          "MEDGEN:235405",
          "NCIT:C6769",
          "UMLS:C1335114"
        ],
        "synonyms": [
          "astrocytic tumour of optic nerve",
          "astrocytoma (excluding glioblastoma) of cranial nerve II",
          "astrocytoma of optic nerve",
          "astrocytoma of the optic nerve",
          "cranial nerve II astrocytoma (excluding glioblastoma)",
          "optic nerve astrocytoma",
          "optic tract astrocytoma",
          "optic tract astrocytoma (excluding glioblastoma)"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          },
          {
            "ref": "MONDO:0024458",
            "name": "disorder of visual system"
          }
        ],
        "definition": "A astrocytoma (excluding glioblastoma) that involves the cranial nerve II."
      },
      "child_count": 0,
      "reference_id": "MONDO:0003234"
    },
    {
      "id": 5790,
      "label": "childhood optic tract astrocytoma",
      "isLeaf": true,
      "isRoot": false,
      "parents": [
        5909,
        21557
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:6575",
          "GARD:0023743",
          "MEDGEN:232072",
          "NCIT:C7534",
          "UMLS:C1333014"
        ],
        "synonyms": [
          "childhood visual pathway astrocytoma",
          "optic tract astrocytoma of childhood",
          "paediatric optic tract astrocytoma",
          "paediatric visual pathway astrocytoma",
          "pediatric optic tract astrocytoma",
          "pediatric visual pathway astrocytoma"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          },
          {
            "ref": "MONDO:0024458",
            "name": "disorder of visual system"
          }
        ],
        "definition": "An astrocytoma that arises from the visual pathway and occurs during childhood."
      },
      "child_count": 0,
      "reference_id": "MONDO:0003931"
    }
  ],
  "roots": [
    {
      "id": 3050,
      "label": "sensory system cancer"
    },
    {
      "id": 5133,
      "label": "diencephalic astrocytomas"
    },
    {
      "id": 16766,
      "label": "optic pathway glioma"
    }
  ]
}