Thursday, May 23, 2013

CT Detects Twice as Many Lung Cancers as X-Ray.

Source: sciencedaily.com


May 22, 2013 - Doctors should discuss the benefits and risks of screening for lung cancer LDCT after today's publication in the New England Journal of Medicine, to share the results of the first (of three planned) Annual Exam NLST information of their patients. "Working for the prevention of cancer, it is important to check if it can be diagnosed with cancer really early. Analyzing the NLST participants at the beginning of annual screening study shows that the number of cancer early detection in the CT arm is significantly higher than the number of recognized hand chest X-ray, "says Timothy Church, Ph.D., professor and biostatistician School of Public Health, University of Minnesota, which participated in the NLST design was about implementation and evaluation.

The church is also noted that the reduction in mortality ultimate measure of a successful strategy for the prevention of cancer. NLST is a large-scale, longitudinal, randomized clinical trial involving more than 53,400 participants in the study as either a standard or a hand LDCT chest radiographs to assess whether lung cancer screening saves lives. Publication of the results (NEJM, 2011) reported a 20 percent reduction in lung cancer mortality among participants (all with high-risk disease) screened by chest X-ray LDCT compared with those undergoing the inspection.

The authors report that the first examination results reflect the NLST other large studies LDCT positive compared with the results of X-ray chest, with the discovery of a positive test result [6369 compared to 2176 or] [7191 compared to 2387, or], further diagnostic procedures and other more biopsies NLST saw invasive procedures [297 vs. 121, respectively], and more lung cancer in the LDCT arm relative to the legs RT during the first round of selection [292 vs. 190, respectively]. Although the results were widely expected to announce a major cause of information on the exact differences between the two branches of the document. "Although we see that CT gave see more patients for additional testing, the question boils down to whether the 20-percent reduction in the incidence of mortality is an additional screening of high-risk patients should not be introduced," says Church. Noted that although more follow- procedures compared with the radiograph LDCT leg, make sure it is encouraging that the number of people, more invasive monitoring of the process was actually very small.

Another encouraging result reported a high level of compliance in the implementation of LDCT expertise in the study of 33 sites conducted to study the screen image. "The areas that meet the low-dose CT protocol specifications in 98.5 per cent of the studies conducted and an amazing view of the many thousands of scans," says Denise R. Aberle, MD, of the National investigator for NLST ACRIN main site and co-host researcher for the team UCLA NLST. Aberle, a member of the Jonsson Comprehensive Cancer Center, UCLA, Professor of Radiology and biotechnology and vice-president of research in the field of radiology in Los Angeles, also stressed that the results of the first screen clearly showing that CT screening program for lung cancer with radiologists acquired a verbal and written, similar results to those numbers, computer tomography of the same caliber or better than those that are suitable for the NLST, like paper.

"What we learned from the analysis of the results of the first screen provides doctors discuss with patients the same characteristics, NLST participants (more than 55 current or former heavy smokers) to share the facts," Church said. "These results also caution against that blanket recommendations lung cancer screening because the trade-off between the risk that all the unnecessary procedures and the fear of dying from lung cancer is a unique individual."

"The publication of today still represents NLST type is too important to screen for lung cancer in the proposal of the United States," says Mitchell J. Schnall, MD, PhD, ACRIN Network Chair of the group, co-chair of ECOG-ACRIN Cancer Research Group and chairman of the department of radiology at the University of Pennsylvania . "Congratulations to the team information NLST develop solutions NLST procedure patients, physicians and health care policy manual. Continuing his efforts"