{
  "id": 9641,
  "label": "familial pterygium of the conjunctiva",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0008337",
  "properties": {
    "xrefs": [
      "GARD:0004569",
      "MEDGEN:896736",
      "MESH:C566740",
      "OMIM:178000",
      "Orphanet:2989",
      "UMLS:C4274782"
    ],
    "synonyms": [
      "pterygium of conjunctiva and cornea",
      "pterygium of the conjunctiva and cornea"
    ],
    "categories": [
      {
        "ref": "MONDO:0002022",
        "name": "disorder of orbital region"
      },
      {
        "ref": "MONDO:0005071",
        "name": "nervous system disorder"
      },
      {
        "ref": "MONDO:0024458",
        "name": "disorder of visual system"
      }
    ],
    "definition": "Familial pterygium of the conjunctiva is a rare form of pterygium, which develops in early adulthood, characterized by a wing-like bulbar thickening of the conjunctiva in the interpalpebral fissure area that can be cured by surgical excision."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 6813,
      "label": "pterygium",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7676,
        20574,
        24305
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:0002116",
          "EFO:0000678",
          "ICD10CM:H11.0",
          "ICD9:372.4",
          "ICD9:372.40",
          "MEDGEN:46202",
          "MESH:D011625",
          "NCIT:C133744",
          "SCTID:77489003",
          "UMLS:C0033999",
          "icd11.foundation:1207385905"
        ],
        "synonyms": [
          "pterygium of conjunctiva and cornea"
        ],
        "categories": [
          {
            "ref": "MONDO:0002022",
            "name": "disorder of orbital region"
          },
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          },
          {
            "ref": "MONDO:0024458",
            "name": "disorder of visual system"
          }
        ],
        "definition": "A wedge-shaped fibrovascular lesion arising from the bulbar conjunctiva and extending to the cornea. It is caused by chronic exposure to solar ultraviolet radiation, heat, and dust. It may cause severe vision loss. Studies have linked pterygium to neoplastic proliferation and suggest that it may be a stem cell disorder."
      },
      "child_count": 9,
      "reference_id": "MONDO:0005085"
    },
    {
      "id": 24270,
      "label": "hereditary neurological disease",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        5714,
        6799
      ],
      "type_id": 0,
      "properties": {
        "synonyms": [
          "neurogenetic disease"
        ],
        "categories": [
          {
            "ref": "MONDO:0005071",
            "name": "nervous system disorder"
          }
        ],
        "definition": "A heterogeneous group of genetic conditions with Mendelian (autosomal dominant, recessive, or X-linked) or chromosomal etiology characterized by abnormalities in the brain, spinal cord, nerves, or muscles."
      },
      "child_count": 528,
      "reference_id": "MONDO:0100545"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 6813,
      "label": "pterygium"
    },
    {
      "id": 24270,
      "label": "hereditary neurological disease"
    }
  ]
}