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New Recommendations for Lung Cancer Screening

Experts compile evidence-based guidelines (September 4)

Experts in Ontario, Canada, have developed evidence-based guidelines for screening high-risk populations for lung cancer.

Their recommendations will be published in the October issue of the Journal of Thoracic Oncology, the journal of the International Association for the Study of Lung Cancer.

Key recommendations include:

  • Screening for lung cancer with low-dose computed tomography (LDCT) is recommended in high-risk populations, defined as persons who are 55 to 74 years of age with a minimum smoking history of 30 pack-years or more.
  • Screening for lung cancer should be done using an LDCT multidetector scanner with the following parameters: 120 to 140 kVp, 20 to 60 mAs, with an average effective dose of 1.5 mSv or less.
  • A nodule size of 5 mm or more found on the LDCT indicates a positive result and warrants a 3-month follow-up CT. Nodules of 15 mm or more should undergo immediate further diagnostic procedures to rule out definitive malignancy.
  • Follow-up CT of a nodule should be done at 3 months as a limited LDCT scan.
  • Persons at high risk for lung cancer should begin screening with an initial LDCT scan followed by annual screens for 2 consecutive years, and then once every 2 years after each negative scan.

Source: Medical Xpress; September 4, 2013.

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