Navigation Links
Breast Cancer Tends to Grow Faster in Younger Women

Finding could affect how screenings are conducted, analyzed, researchers say

THURSDAY, May 8 (HealthDay News) -- While the rate at which breast cancer tumors grow varies among patients, that growth tends to be faster among younger women, Norwegian researchers report.

These findings may help in planning and evaluating screening programs, clinical trials and other studies, the researchers say.

Using a new mathematical model, the scientists were also able to estimate the numbers of breast cancers detectable by mammography. This is a new approach to estimating the growth rate of tumors and the ability of mammograms to find them.

"There are enormous implications for the sensitivity of breast cancer screening programs," lead researcher Harald Weedon-Fekjr, of the Department of Etiological Research, Cancer Registry of Norway, said in a statement.

"We found that mammography screen test sensitivity increases sharply with increased tumor size, as one might expect. Detection rates are just 26 percent for a 5 millimeter tumor but increase to 91 percent once a tumor is 10 millimeter in size," he added.

The report was published in the May 8 issue of the online journal Breast Cancer Research.

In the study, Weedon-Fekjr, and colleagues tested their model using mammography results from 395,188 women aged 50 to 69.

The researchers found that the growth rate of tumors varied significantly between patients. About one in 20 tumors doubled in size, from 10 to 20 millimeters in just over a month. However, a similar number of tumors took more than six years to double in size.

Based on this finding, Weedon-Fekjr's team estimated that it takes an average of 1.7 years for tumors to double in size. Moreover, tumor growth appeared to be faster among younger women and slowed as women aged, the researchers noted.

"Tumor growth and test sensitivity estimates can be directly linked to tumor size in a full population study, resulting in very useful growth estimates directly connected to a biologically relevant measure," the researchers wrote.

"Tumor growth seems to vary greatly between tumors, with higher growth rates among younger women. Most tumors become visible at screening when they reach a diameter of 5 millimeters to 10 millimeters," they concluded.

One expert thinks this study again confirms the need for women to have a mammogram every year.

"This study continues to prove why we need to screen women every year, starting at age 40," said Debbie Saslow, director of breast and gynecologic cancer at the American Cancer Society.

This is another study that shows that tumors grow faster in younger women, Saslow said. "It just doesn't make sense to have guidelines that say younger women should be screened every one to two years and every year as they get older," she said.

More information

For more on breast cancer, visit the U.S. National Cancer Institute.

SOURCES: Debbie Saslow, Ph.D., director, breast and gynecologic cancer, American Cancer Society, Atlanta; May 8, 2008, Breast Cancer Research

Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Survival differences by race most apparent in advanced stages of breast cancer
2. MRI finds breast cancer before it becomes dangerous
3. Pathway links inflammation, angiogenesis and breast cancer
4. Drop in breast cancer incidence linked to hormone use, not mammograms
5. Breast cancer prevention practices vary across Canada
6. Eating junk food whilst pregnant and breastfeeding may lead to obese offspring
7. Acrylamide Wont Raise Breast Cancer Risk
8. New link between estrogen and breast cancer
9. Hypnosis Eases Pain of Breast Cancer Surgery
10. Discovery suggests location of genes for breast density, a strong risk factor for breast cancer
11. Longaberger Expands Horizon of Hope Campaign to Build Support for American Cancer Societys Breast Cancer Initiatives
Post Your Comments:
Related Image:
Breast Cancer Tends to Grow Faster in Younger Women
(Date:10/9/2015)... Francisco, CA (PRWEB) , ... October 09, 2015 ... ... Geneva, Switzerland for highly sought after internships at the pre-eminent organization in global ... movement dedicated to eliminating social and health disparities. These internships are a mechanism ...
(Date:10/9/2015)... ... ... "My spouse and I rely on canes to walk, and we both have ... Buffalo, N.Y. "This is not only frustrating but it’s unsanitary. My design solves this ... to keep a cane upright while it’s not in use. It prevents the cane ...
(Date:10/9/2015)... ... ... Head Over Heels Athletic Arts gymnast, Madelyn Williams, will attend the USA ... Huntsville, Texas on October 17-21. , "It's very exciting to be invited to ... director, said. “It's a stepping stone into the U.S. elite system where Maddie and ...
(Date:10/9/2015)... ... October 09, 2015 , ... Confidence Plus Insurance ... a community improvement initiative that involves working with a series of local charities ... of Confidence Plus Insurance is the Gleason Park Electric Violin Ensemble (GPEVE). , ...
(Date:10/9/2015)... ... October 09, 2015 , ... MMJ PhytoTech Limited ... Ed Begley Jr., airing 1st QT 2016 via the Discovery Channel. Dates and ... Phytotech Limited (MMJ) – a global leader in the field of commercializing medicinal ...
Breaking Medicine News(10 mins):
... News) -- Crohn,s disease may cause post-traumatic stress disorder ... nearly 600 Swiss adults with Crohn,s disease, an incurable ... The study participants underwent PTSD assessment at the ... were found to have the disorder. All the participants ...
... News) -- A U.S. Food and Drug Administration advisory committee ... prevention of prostate cancer, the third-highest cancer killer of men. ... the risks of Merck,s Proscar outweighed its benefits, according to ... the panel voted 14-2, with two abstentions, against GlaxoSmithKline,s Avodart. ...
... veterans are nearly three times as likely as civilians ... researchers at Portland State University (PSU) and Oregon Health ... Deaths Among Women With U.S. Military Service: A Hidden ... Psychiatric Services , a journal published by the American ...
... HealthDay Reporter , WEDNESDAY, Dec. 1 (HealthDay News) -- The ... from CT scans may be lower than previously thought, new ... Wednesday at the annual meeting of the Radiological Society of ... of Medicare records covering nearly 11 million patients. , "What ...
... , WEDNESDAY, Dec. 1 (HealthDay News) -- The case of ... colitis -- and actually got better -- sheds light on ... study suggests. "Our findings in this case report suggest ... roundworm can alleviate the symptoms of ulcerative colitis," said ...
... Medicine (BUSM) have identified a mechanism by which specific viruses ... This finding, which is currently featured in an online edition ... to the development of more targeted treatments against many types ... Dunn, a postdoctoral fellow, under the direction of John H. ...
Cached Medicine News:
(Date:10/8/2015)... 8, 2015  Ardelyx, Inc. (NASDAQ: ARDX ... and cardio-renal diseases, today announced that clinical data ... be presented at the 2015 American College of ... measures of sustained response in IBS-C patients enrolled ... Phase 2 trial. The meeting will be held ...
(Date:10/8/2015)... 2015  Allergan plc (NYSE: AGN ), a ... hold its R&D Day on November 4, from 11:00 ... 1:00 p.m. PT). The company will also host its ... a.m. ET (6:00 a.m. PT). ... --> Logo - ...
(Date:10/8/2015)... , Oct. 8, 2015  The National ... approximately $40 million to the Broad Institute of ... sequencing of 20,000 individuals, as well as data ... metabolite profiling. Trans-Omics for Precision Medicine ... step toward a larger initiative, which will use ...
Breaking Medicine Technology:
... MELVILLE, N.Y., April 23, 2012  Henry Schein, ... provider of health care products and services to dental, ... with the launch of its 2012 Global Reflections program ... "Henry Schein firmly believes that protecting ...
... Systems, Inc. (NASDAQ: DCTH ) today announced it ... revolver with Silicon Valley Bank ("SVB"), a leading provider of ... available for general corporate purposes supporting the overall growth and ... transaction, Eamonn P. Hobbs, President & CEO of Delcath Systems, ...
Cached Medicine Technology:
... Tri-Flo® suction catheter design was created ... patients while still providing high suctioning ... (5/6, 8 or 10 Fr) feature ... catheter placement. Our complete catheter line ...
Tracheal Suction Latex Rubber Catheters - Funnel End...
Rubber bronchial coude catheter, X-ray opaque, one eye, whistle tip....
KCIs KinAir IV combines Advanced Pressure Relief Therapy with a manual wound care turn to provide optimum skin care and patient,positioning....
Medicine Products: