{
  "data": {
    "__count": 1,
    "__licence": {
      "identifier": "CC-BY-4.0",
      "link": "https://creativecommons.org/licenses/by/4.0",
      "name": "Creative Commons Attribution 4.0 International"
    },
    "results": {
      "Date": "2026-06-23 07:53:50",
      "DisorderDisorderAssociation": null,
      "DisorderFlag": [
        {
          "Label": null,
          "Value": 1
        }
      ],
      "DisorderGroup": "Disorder",
      "ExternalReference": [
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "9484",
          "Source": "GARD"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": "Attributed code (ICD-10/ICD-11: The targeted code is assigned by Orphanet)",
          "DisorderMappingRelation": "NTBT (ORPHAcode is narrower than the targeted code used to represent it)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "I69.0",
          "Source": "ICD-10"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "0016594",
          "Source": "MONDO"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "10070564",
          "Source": "MedDRA"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "C2938918",
          "Source": "UMLS"
        }
      ],
      "ORPHAcode": 247245,
      "OrphanetURL": "http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=247245",
      "Preferred term": "Superficial siderosis",
      "SummaryInformation": [
        {
          "Definition": "Superficial siderosis is a rare neurologic disease characterized by progressive sensorineural hearing loss, cerebellar ataxia, pyramidal signs, and neuroimaging findings revealing hemosiderin deposits in the spinal and cranial leptomeninges and subpial layer. The disease progresses slowly and patients may present with mild cognitive impairment, nystagmus, dysmetria, spasticity, dysdiadochokinesia, dysarthria, hyperreflexia, and Babinski signs. Additional features reported include dementia, urinary incontinence, anosmia, ageusia, and anisocoria."
        }
      ],
      "Synonym": [
        "Hemosiderosis of the central nervous system",
        "Superficial hemosiderosis of the CNS",
        "Superficial hemosiderosis of the central nervous system",
        "Superficial siderosis of the CNS",
        "Superficial siderosis of the central nervous system"
      ],
      "Typology": "Disease"
    }
  },
  "datasetCategory": {
    "lang": "en",
    "name": "Rare diseases and cross-referencing"
  },
  "parameters": {
    "path": {
      "ORPHAcode": 247245
    },
    "query": {}
  },
  "uri": "https://api.orphadata.com/rd-cross-referencing/orphacodes/247245"
}