Navigation Links
Improved diagnostic performance of low-dose computed tomography screening

DENVER - Investigators of the COSMOS (Continuous Observation of SMOking Subjects) study show good compliance and patient survival outcomes using a 5-year low-dose computed tomography (LDCT) screening protocol in individuals at high-risk of developing lung cancer. This protocol had fewer patients requiring further diagnostic follow-up compared to other studies, including the National Lung Cancer Screening Trial (NLST), with a minimal number of incorrect diagnoses.

The 5-year survival rate for early diagnosed lung cancer is 50% but after the cancer has spread to distant regions it is only 4%. Recently, the NLST showed a 20% lung cancer mortality reduction with LDCT compared to chest x-ray, which verified that early detection can decrease lung cancer deaths. However, few studies have rigorously assessed the diagnostic performance, invasiveness and side effects of LDCT screening protocols with enduring follow-up.

The COSMOS study screened 5203 asymptomatic high-risk subjects (age ≥50 and ≥20 pack years smoking history) who, based on the study criteria, either went on to other diagnostic procedures (CT, PET, or surgery) to verify lung cancer, or were rescreened every year for the next 4 years. All subjects were clinically followed for a median of 5.2 years.

The results of this study, reported in the July issue of the Journal of Thoracic Oncology (JTO), the official journal of the International Association for the Study of Lung Cancer, show that overall, 79% of the participants remained on the study for 5 years and only 6.4% required a procedure beyond the annual LDCT. Primary lung cancer was diagnosed in 175 patients and 78% of these were diagnosed with localized disease. Due to the size and long follow-up, there were 23,116 person-years of observation. Therefore, the overall lung cancer detection rate was 0.76 per 100 person-years. Out of the 204 invasive diagnostic procedures, 29 were benign for lung cancer, 34 had minor complications, 12 major complications and 1 post-operative fatality was reported. There were 14 cases where the lesions were not diagnosed as cancer, but were later determined to be cancer on subsequent yearly screening. A high proportion of the cancers (87%) were treated with intent to cure and the overall 5-years survival was 78%.

"The results of the COSMOS workup protocol for indeterminate nodules detected with LDCT screening are encouraging, particularly the low recall and delayed diagnosis rates as well as the good long-term survival," says Dr. Giulia Veronesi, lead author of the study and member of IASLC. "However, the workup can still be improved, possibly by tailoring the screening interval to the risk of the individual being screened using a risk evaluation algorithm that will hopefully also include in the near future molecular markers like a microRNA expression signature in serum."


Contact: Rob Mansheim
International Association for the Study of Lung Cancer

Related medicine news :

1. Improved identification of war wound infections promises more successful treatment
2. Despite economic blows, infant health has improved among US poor
3. E-cigarette use for quitting smoking is associated with improved success rates
4. Donor livers preserved and improved with room-temperature perfusion system
5. Aspirin use appears linked with improved survival after colon cancer diagnosis
6. MATH, HPV status in HNSCC patients effective markers of improved patient outcome
7. Researchers identify possible explanation for link between exercise & improved prostate cancer outcomes
8. Latest Research Shows Improved Long-Term Memory with Same Caffeine Level as 5-hour ENERGY® Shots
9. Personal health record associated with improved medication adherence
10. CEO of Simply G Media GJ Reynolds Discussed His Launch Of The New and Improved Website on The BeachLifestyle Radio Show.
11. Improved Method of Securing IV Lines Invented by InventHelp Client (BIR-2159)
Post Your Comments:
(Date:6/25/2016)... Lewisville, TX (PRWEB) , ... June 25, 2016 , ... ... in the United States, named Dr. Sesan Ogunleye, as the Medical Director of its ... be the facility Medical Director of our new Mesquite location,” said Dr. James M. ...
(Date:6/25/2016)... ... ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter of ... too high can result in disappointment, perhaps even self-loathing. However, those who set the ... Research from reveals that behind the tendency to set low expectations ...
(Date:6/24/2016)... ... June 24, 2016 , ... Marcy was in a crisis. Her son James, eight, was out ... family verbally and physically. , “When something upset him, he couldn’t control his emotions,” remembers ... would throw rocks at my other children and say he was going to kill them. ...
(Date:6/24/2016)... Diego, CA (PRWEB) , ... June 24, 2016 , ... ... with the American Cancer Society and the Road To Recovery® program to drive cancer ... to seniors and other adults to ensure the highest quality of life and ongoing ...
(Date:6/24/2016)... York, NY (PRWEB) , ... June 24, 2016 ... ... publication Haute Living, is proud to recognize Dr. Barry M. Weintraub as a ... that “the most beautiful women in the world, and the most handsome men, ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced ... BRAHMS PCT (procalcitonin) assay as a dedicated testing solution ... this clearance, Roche is the first IVD company in ... sepsis risk assessment and management. PCT is ... levels in blood can aid clinicians in assessing the ...
(Date:6/23/2016)... 2016 Capricor Therapeutics, Inc. ... biotechnology company focused on the discovery, development and ... enrollment in its ongoing randomized HOPE-Duchenne clinical trial ... of its 24-patient target. Capricor expects the trial ... of 2016, and to report top line data ...
(Date:6/23/2016)... Bracket , a leading clinical trial technology and specialty ... Bracket eCOA (SM) 6.0, at the 52 nd ... in Philadelphia , Pennsylvania.  A demonstration of ... its kind to fully integrate with RTSM, will be held ... a flexible platform for electronic clinical outcomes assessments that is ...
Breaking Medicine Technology: