{
  "abstract": "A man in his 60s with a history of asbestos exposure had been followed for progressive right-sided pleural thickening over several years. Imaging findings on high-resolution CT and 18F-fluorodeoxyglucose positron emission tomography/CT strongly suggested malignant pleural mesothelioma. However, both CT-guided pleural biopsy and endobronchial ultrasound-guided transbronchial needle aspiration of the mediastinal lymph nodes showed no evidence of malignancy, and a definitive diagnosis could not be established. After a 2-year interruption in follow-up, pleural thickening had further progressed. Immunostaining of previously obtained tissue samples ultimately led to a diagnosis of immunoglobulin G4 (IgG4)-related pleurisy. Steroid therapy resulted in a reduction of pleural thickening. This case highlights the importance of considering IgG4-related pleurisy in the differential diagnosis of pleural disease mimicking malignant pleural mesothelioma, particularly in patients with a history of asbestos exposure.",
  "authors": [
    {
      "affiliations": [
        "Pulmonology, JA Toride Sogo Iryo Center, Toride, Japan"
      ],
      "name": "Tomoyuki Ogata"
    },
    {
      "affiliations": [
        "Department of Respiratory Medicine, JA Toride Medical Center, Toride, Japan"
      ],
      "name": "Kentaro Nakamura"
    },
    {
      "affiliations": [
        "Department of Respiratory Medicine, JA Toride Medical Center, Toride, Japan"
      ],
      "name": "Tomohiro Moriya"
    },
    {
      "affiliations": [
        "Department of Respiratory Medicine, JA Toride Medical Center, Toride, Japan"
      ],
      "name": "Takaaki Yamashita"
    }
  ],
  "title": "IgG4-related pleurisy with suspected asbestos involvement",
  "uid": "facc67dd-02a3-552e-acbf-b6b54c84293b"
}