Useful Radiological Features for the Diagnosis of Pulmonary Nodules ≤2.0 cm in Diameter on Computed Tomography

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  • Sugihara Jun
    Department of Respiratory Medicine, Musashino Red Cross Hospital Department of Respiratory Medicine, Kashiwa Municipal Hospital
  • Takeyama Hiroaki
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Kamoshida Tatsuhiko
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Okawa Chuta
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Kawaguchi Yoji
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Yagi Tamon
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Hanada Satoko
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Taki Reiko
    Department of Respiratory Medicine, Musashino Red Cross Hospital
  • Kojima Katsuo
    Department of Thoracic Surgery, Karatsu Red Cross Hospital
  • Sakurai Urara
    Department of Pathology, Musashino Red Cross Hospital

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Other Title
  • CT長径2.0 cm以下の肺結節における良悪性診断を困難とする画像所見の検討

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Abstract

<p>Objective. There is a certain risk of unnecessarily dissecting small pulmonary nodules found by computed tomography (CT). An appropriate guidance for preventing such unnecessary treatments is needed. Method. We selected pulmonary nodules ≤2.0 cm in diameter that had been surgically dissected from April 2010 to October 2016. We then analyzed the relationship between the imaging findings, pre-operative examination findings and pathological diagnosis. Result. A total of 270 lesions from 237 patients were included in the study. Concave, polygonal nodules had similar proportions for both benign and malignant diagnoses. Of the 17 patients whose clinical and pathological diagnoses were discrepant, 8 had concave, polygonal nodules. We considered these lesions difficult to evaluate correctly based on CT findings. Conclusion. Malignancy can be particularly difficult to distinguish via CT for pulmonary nodules with a concave, polygonal shape that are ≤2.0 cm in diameter, and a careful evaluation is necessary.</p>

Journal

  • Haigan

    Haigan 60 (1), 17-26, 2020-02-20

    The Japan Lung Cancer Society

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