Navigation Links
Laser Technology Might Help Doctors Diagnose Melanoma
Date:2/23/2011

WEDNESDAY, Feb. 23 (HealthDay News) -- Researchers say they've developed a new and potentially more accurate way to diagnose melanoma lesions, using laser technology.

The laser equipment spots key differences in pigmentation between healthy skin and cancerous tissue, the team explained.

As currently envisioned, the new screening procedure would still require excision of suspicious moles (otherwise known as a tissue biopsy) before the laser-imaging diagnosis could be attempted. However, preliminary indications suggest that the approach will be more precise than current screening procedures, which can often leave patients with inconclusive results and unnecessary surgeries.

Researchers from Duke University's Center for Molecular and Biomolecular Imaging (CMBI) in Durham, N.C., discuss the technique in the Feb. 23 issue of Science Translational Medicine. The work was funded by a grant from the U.S. National Institutes of Health.

Melanoma is the deadliest form of skin cancer, and the fifth- and sixth-most common cancer overall for American men and women, respectively, according to background information in the study. In 2009, over 68,000 new cases of melanoma were diagnosed in the United States, according to the American Cancer Society, and about 8,700 patients died from the disease.

Pathologists have been somewhat frustrated by standard techniques designed to catch the disease, the study authors noted. These techniques include the use of a light and magnifying glass and the removal and analysis in the laboratory of sample cells. The researchers pointed out that even lab analysis yields only about 85 percent diagnostic accuracy.

The Duke research team, including CMBI director Warren S. Warren and Duke graduate student Thomas Matthews, tried out the lasers on 42 skin slices, pumping two beams -- smaller than those emitted by everyday laser pointers -- at the target moles. The laser energy that was absorbed shifted around the sampled skin cells, highlighting microscopic differences in skin pigmentation.

Because melanoma cells happen to have more of a particular pigment called "eumelanin" than do healthy cells, this dynamic allowed the researchers to easily identify signs of cancer. The method was 100 percent accurate in identifying all 11 cases of melanoma present in the test slides, the study authors said in a university news release.

The Duke team noted that testing is ongoing, including an effort to develop a method that would allow dermatologists to laser screen for melanoma without the need for the lesion to be removed.

In the opinion of Dr. Vijay Trisal, assistant professor of surgical oncology at the City of Hope Cancer Center in Duarte, Calif., the current move to fashion a new screening tool for melanoma "is a very worthy effort."

"And that is because in addition to biopsies not always showing clear-cut results, we also just do too many of them," Trisal noted. "Out of every 100 people who undergo a biopsy today, just one will prove to be malignant, which suggests that we really should be doing less of them in the first place. And I expect that . . . the further development of this kind of new diagnosis approach will eventually lead to just that: reducing our need for these kind of unnecessary procedures."

More information

For more on melanoma diagnosis, visit the American Cancer Society.

-- Alan Mozes

SOURCES: Duke University, news release, Feb. 23, 2011; Vijay Trisal, M.D., assistant professor, surgical oncology, City of Hope Cancer Center, Duarte, Calif.


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Lasers ID deadly skin cancer better than doctors
2. Smart lasers could make cancer biopsies painless, help speed new drugs to market
3. Colorful brains, cooling lasers, disease-detecting lights and more
4. Mayo Clinic finds early success with laser that destroys tumors with heat
5. Portable laser devices to improve disease diagnosis
6. Laser may reduce prostate surgerys sexual side effects
7. NIST researchers measure high infrared power levels from some green lasers
8. The Laser Warehouse Increases its Inventory of Used Cosmetic Lasers to Meet Growing Demand
9. Skin Laser and Surgery Specialists Offers New eMatrix™ Treatment for Acne Scarring
10. Miami's Soluna MD Educates Patients, Gains International Reputation for Excellence in Laser Lipo plus Ultrasound Technique, SmartLipo™ Ultra
11. CosmeticLaserWorld.com Gives Buyers Peace of Mind Through Industry-Leading Investment Protection Plan
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Laser Technology Might Help Doctors Diagnose Melanoma
(Date:8/22/2017)... ... August 22, 2017 , ... Although Labor Day is not ... communities have begun providing weekend displays, and numerous households celebrate the unofficial end of ... be downright terrifying for pets. , Kris Zambo, owner of Dynamite Fireworks ...
(Date:8/21/2017)... , ... August 22, 2017 , ... ... not without risk to health and safety. By learning and implementing best practices ... , In this webinar, attendees will gain a better understanding of a ...
(Date:8/21/2017)... ... August 21, 2017 , ... Los Angeles area medical ... for academic year 2017-2018, Christina M. Busuito, M.D. and Lukasz Swistun, M.D. This ... Plastic and Reconstructive Surgery. The candidate will have the opportunity to work ...
(Date:8/21/2017)... ... August 21, 2017 , ... ... it has become the Official Technology Partner of North Country Region Volleyball and ... Event Systems) volleyball software, along with providing sport management software to their member ...
(Date:8/21/2017)... ... August 21, 2017 , ... Marathon running has ... the country. , Outdoor running increases exposure to ultraviolet radiation, a carcinogen that ... of melanoma, and only half may be adequately protecting themselves with proper clothing ...
Breaking Medicine News(10 mins):
(Date:8/7/2017)... -- Diplomat Pharmacy, Inc. (NYSE: DPLO), the nation,s largest independent specialty ... 2017.  All comparisons, unless otherwise noted, are to the quarter ... Second Quarter 2017 Highlights include: ... of 3.5% Total prescriptions dispensed of 220,000, ... versus 7.6% Gross profit per prescription ...
(Date:8/4/2017)...  Agragen, LLC, a Cincinnati ... nutraceutical, and aquacultural feed sectors, announces a significant ... candidates, AGR131.  This drug is designed to trap ... of patients suffering from inflammatory conditions such as ... Biological pharmaceuticals currently ...
(Date:8/2/2017)... and BENTON, Ky. , Aug. 2, 2017   Marshall County ... its environmental services (ES) team to proactively reduce the risk of hospital-acquired infections (HAIs). The ... disinfection robot that uses UVC light energy to kill deadly pathogens such as C. ... Tru-D SmartUVC ... Tru-D in action in ...
Breaking Medicine Technology: