{
  "abstract": "A 72-year-old woman presented with a 6-month history of productive cough, hoarseness and exertional dyspnoea. She is a never-smoker with a history of treated bowel cancer, basal cell carcinoma and hiatus hernia. Physical examination, chest X-ray and blood tests were unremarkable. Spirometry and transfer factor were normal, but her flow volume loop showed fixed large-airway obstruction.",
  "authors": [
    {
      "affiliations": [
        "Respiratory, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK",
        "Respiratory Medicine, South Tyneside and Sunderland NHS Foundation Trust, South Shields, UK"
      ],
      "name": "Sze Hwei Ooi"
    },
    {
      "affiliations": [
        "University Hospital of North Tees, Stockton-on-Tees, UK"
      ],
      "name": "Alexander Wilson"
    },
    {
      "affiliations": [
        "Radiology, University Hospital of North Tees, Stockton-on-Tees, Stockton-on-Tees, UK"
      ],
      "name": "Laura Clarke"
    },
    {
      "affiliations": [
        "Rheumatology, University Hospital of North Tees, Stockton-on-Tees, UK"
      ],
      "name": "Martin Rynne"
    },
    {
      "affiliations": [
        "Respiratory Medicine, University Hospital of North Tees, Stockton-on-Tees, UK"
      ],
      "name": "Victor Chew"
    }
  ],
  "title": "Primary adenoid cystic carcinoma of the trachea",
  "uid": "1698191e-82ea-5eed-93d0-f46dd75338ae"
}