{
    "info": {
        "nct_id": "NCT02557048",
        "official_title": "Malignant Head and Neck Tumors in Children: A Retrospective Study",
        "inclusion_criteria": "* Patients whose age less than 19 years.\n* Patients diagnosed with a primary malignant tumor of the head & neck.\nHealthy volunteers allowed\nMust have maximum age of 18 Years",
        "exclusion_criteria": "* Patients whose age more than 18 years.\n* Patients diagnosed with a malignant disease primarily arising from the bone marrow.\n* Patients diagnosed with tumors of the central nervous system.\n* Patients diagnosed with retinoblastoma.",
        "miscellaneous_criteria": ""
    },
    "inclusion_lines": [
        {
            "line": "* Patients whose age less than 19 years.",
            "criterions": [
                {
                    "exact_snippets": "age less than 19 years",
                    "criterion": "age",
                    "requirements": [
                        {
                            "requirement_type": "value",
                            "expected_value": {
                                "operator": "<",
                                "value": 19,
                                "unit": "years"
                            }
                        }
                    ]
                }
            ]
        },
        {
            "line": "* Patients diagnosed with a primary malignant tumor of the head & neck.",
            "criterions": [
                {
                    "exact_snippets": "diagnosed with a primary malignant tumor",
                    "criterion": "primary malignant tumor",
                    "requirements": [
                        {
                            "requirement_type": "presence",
                            "expected_value": true
                        }
                    ]
                },
                {
                    "exact_snippets": "tumor of the head & neck",
                    "criterion": "tumor location",
                    "requirements": [
                        {
                            "requirement_type": "location",
                            "expected_value": [
                                "head",
                                "neck"
                            ]
                        }
                    ]
                }
            ]
        },
        {
            "line": "Healthy volunteers allowed",
            "criterions": [
                {
                    "exact_snippets": "Healthy volunteers allowed",
                    "criterion": "volunteer health status",
                    "requirements": [
                        {
                            "requirement_type": "status",
                            "expected_value": "healthy"
                        }
                    ]
                }
            ]
        },
        {
            "line": "Must have maximum age of 18 Years",
            "criterions": [
                {
                    "exact_snippets": "maximum age of 18 Years",
                    "criterion": "age",
                    "requirements": [
                        {
                            "requirement_type": "maximum",
                            "expected_value": {
                                "operator": "<=",
                                "value": 18,
                                "unit": "Years"
                            }
                        }
                    ]
                }
            ]
        }
    ],
    "exclusion_lines": [
        {
            "line": "* Patients whose age more than 18 years.",
            "criterions": [
                {
                    "exact_snippets": "age more than 18 years",
                    "criterion": "age",
                    "requirements": [
                        {
                            "requirement_type": "value",
                            "expected_value": {
                                "operator": ">",
                                "value": 18,
                                "unit": "years"
                            }
                        }
                    ]
                }
            ]
        },
        {
            "line": "* Patients diagnosed with a malignant disease primarily arising from the bone marrow.",
            "criterions": [
                {
                    "exact_snippets": "diagnosed with a malignant disease",
                    "criterion": "malignant disease",
                    "requirements": [
                        {
                            "requirement_type": "presence",
                            "expected_value": true
                        }
                    ]
                },
                {
                    "exact_snippets": "primarily arising from the bone marrow",
                    "criterion": "origin of disease",
                    "requirements": [
                        {
                            "requirement_type": "location",
                            "expected_value": "bone marrow"
                        }
                    ]
                }
            ]
        },
        {
            "line": "* Patients diagnosed with tumors of the central nervous system.",
            "criterions": [
                {
                    "exact_snippets": "tumors of the central nervous system",
                    "criterion": "tumors of the central nervous system",
                    "requirements": [
                        {
                            "requirement_type": "diagnosis",
                            "expected_value": true
                        }
                    ]
                }
            ]
        },
        {
            "line": "* Patients diagnosed with retinoblastoma.",
            "criterions": [
                {
                    "exact_snippets": "diagnosed with retinoblastoma",
                    "criterion": "retinoblastoma",
                    "requirements": [
                        {
                            "requirement_type": "diagnosis",
                            "expected_value": true
                        }
                    ]
                }
            ]
        }
    ],
    "miscellaneous_lines": [],
    "failed_inclusion": [],
    "failed_exclusion": [],
    "failed_miscellaneous": []
}