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Related Experiment Videos

Screening for lung cancer using low dose CT scanning.

R MacRedmond1, P M Logan, M Lee

  • 1Department of Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland. rmacredmond@rcsi.ie

Thorax
|February 27, 2004
PubMed
Summary

Low-dose chest computed tomography (LDCCT) screening for lung cancer in high-risk individuals found early-stage cancer in 0.23% of participants. The study also identified a high rate of other significant incidental findings.

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Area of Science:

  • Oncology
  • Radiology
  • Public Health

Background:

  • Lung cancer is a leading cause of cancer death in Ireland, with most cases diagnosed at inoperable stages.
  • Survival rates for lung cancer are critically low, highlighting the need for early detection strategies.

Purpose of the Study:

  • To evaluate the effectiveness of low-dose chest computed tomography (LDCCT) in detecting early-stage, asymptomatic lung cancer.
  • To assess LDCCT's utility in a high-risk urban population.

Main Methods:

  • Recruited 449 high-risk individuals (median age 55, 45 pack-year smoking history) fit for surgery.
  • Administered LDCCT scans and referred non-calcified nodules (NCNs) >/=10 mm for biopsy.
  • Recommended interval LDCCT for NCNs <10 mm to monitor growth.

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Main Results:

  • Detected one case (0.23%) of stage 1 non-small cell lung cancer among six NCNs >/=10 mm.
  • Identified 145 NCNs <10 mm in 19.4% of subjects and mediastinal masses in 0.7%.
  • Observed incidental pathology in 61.5% of patients, primarily emphysema and coronary artery calcification.

Conclusions:

  • Baseline LDCCT screening revealed a low prevalence of resectable lung cancer (0.23%).
  • LDCCT demonstrated a high rate of detecting significant incidental pathologies beyond lung cancer.