{
  "id": 5695,
  "label": "mediastinum seminoma",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0003826",
  "properties": {
    "xrefs": [
      "DOID:6249",
      "GARD:0023685",
      "MEDGEN:277355",
      "NCIT:C6812",
      "UMLS:C1334680"
    ],
    "synonyms": [
      "mediastinal seminoma",
      "mediastinum seminoma",
      "seminoma of mediastinum",
      "seminoma of the mediastinum"
    ],
    "definition": "An extragonadal malignant germ cell tumor that arises from the mediastinum. It is characterized by the presence of uniform cells with clear or eosinophilic cytoplasm, round nucleus with one or more nucleoli, and distinct cellular borders. It usually arises from the anterior mediastinum. It may present with respiratory distress, chest pain, or superior vena cava syndrome or it may be asymptomatic, with the tumor detected on routine chest x-ray. The prognosis of mediastinal pure seminomas is favorable compared to the mediastinal non-seminomatous malignant germ cell tumors."
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 5553,
      "label": "extragonadal seminoma",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        5000,
        5094
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:5838",
          "GARD:0023613",
          "MEDGEN:234243",
          "NCIT:C7327",
          "UMLS:C1333502"
        ],
        "synonyms": [
          "extragonadal primary seminoma",
          "extragonadal seminoma",
          "primary extragonadal seminoma"
        ]
      },
      "child_count": 2,
      "reference_id": "MONDO:0003668"
    },
    {
      "id": 7838,
      "label": "mediastinal malignant germ cell tumor",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        5094,
        7455,
        20308
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "EFO:1000366",
          "GARD:0024365",
          "MEDGEN:277334",
          "NCIT:C6446",
          "SCTID:713293002",
          "UMLS:C1334597"
        ],
        "synonyms": [
          "malignant mediastinal germ cell tumor",
          "malignant mediastinal germ cell tumour",
          "mediastinal germ cell tumor, malignant",
          "mediastinal malignant germ cell tumor",
          "thymic malignant germ cell tumor",
          "thymic malignant germ cell tumour",
          "malignant germ cell neoplasm of mediastinum",
          "malignant germ cell neoplasm of the mediastinum",
          "malignant germ cell tumor of mediastinum",
          "malignant germ cell tumor of the mediastinum",
          "malignant germ cell tumour of mediastinum",
          "malignant germ cell tumour of the mediastinum",
          "malignant mediastinal germ cell neoplasm"
        ],
        "definition": "An extragonadal malignant germ cell tumor that arises from the mediastinum. This category includes seminoma, embryonal carcinoma, yolk sac tumor, choriocarcinoma, mixed germ cell tumors, and immature malignant teratoma."
      },
      "child_count": 9,
      "reference_id": "MONDO:0006298"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 5553,
      "label": "extragonadal seminoma"
    },
    {
      "id": 7838,
      "label": "mediastinal malignant germ cell tumor"
    }
  ]
}