Lung Cancer Mortality in the Mayo Lung Project: Impact of Extended Follow-up
Pamela M. Marcus, Erik J. Bergstralh, Richard M. Fagerstrom, et al.
Abramson Cancer Center of the University of Pennsylvania
Ultima Vez Modificado: 1 de noviembre del 2001
Reviewers: Li Liu, MD
Source: Journal of the National Cancer Institute, Volume 92:1308-1316, (August) 2000
Précis: Screening does not reduce long-term lung cancer mortality
At present, there is widespread acceptance that screening for the early detection of lung cancer is not indicated. The American Cancer Society and the National Cancer Institute (NCI) recommend against efforts for early detection of lung cancer by mass screening (Ann Intern Med 1989 Aug 1;111(3):232-7
). An early report of the Mayo Lung Project observed no reduction in lung cancer mortality with an intense screening regimen consisting of chest x-ray and sputum cytology. In this report, the researchers updated their results with extended follow-up and more participants.
A total of 9211 male smokers were randomly assigned to either undergo a chest x-ray and sputum cytology every 4 months for 6 years (screening group) or were advised to have the same tests annually (usual care group).
- Lung cancer mortality was 4.4 per 1000 person-years in the screening group and 3.9 per 1000 person-years in the usual-care group, which was not statistically different.
- The median survival after diagnosis for the screened group was 1.3 years compared with 0.9 years for those in the usual-care group.
- For those with resected early-stage disease, the median survival was 16 years in the screened group compared with 5 years in the usual-care group, although this was not statistically significant.
After an extended follow-up, the researchers of the Mayo Lung Project concluded that intense screening of smokers by chest x-ray and sputum cytology did not reduce the lung cancer mortality rate, but did appear to increase survival length. This study suggests that such screening may be identifying lung cancers earlier, but with limited clinical relevance.
Volume CT Scans May Improve Lung-Cancer Workups
Mar 6, 2015 - In patients at high risk for lung cancer, volume computed tomography scanning of non-calcified pulmonary nodules over time may provide important diagnostic information, according to a study in the Dec. 3 New England Journal of Medicine.
Frequently Asked Questions
National Cancer Institute
I Wish You Knew
How cancer patients have changed my life
Blogs and Web Chats
OncoLink Blogs give our readers a chance to react to and comment on key cancer news topics and provides a forum for OncoLink Experts and readers to share opinions and learn from each other.
Frente a un nuevo diagnóstico de cáncer o de cambiar el curso de su tratamiento actual? Deje que nuestro personal de enfermería cáncer que ayudan a pasar!