leukoplakia – Page 3 – Oral Cancer News

Screening for oral precancer with noninvasive genetic cytology

Source: Cancer Prevention Research, 10.1158/1940-6207 Authors: Jantine F. Bremmer et al. Oral squamous cell carcinomas develop in precancerous fields consisting of genetically altered mucosal epithelial cells. These precancerous fields may appear as clinically visible lesions, in particular, oral leukoplakia, but the large majority remains clinically undetectable. The aim of this study was to assess the potential value of a noninvasive screening approach to detect precancerous fields. As a first step, we developed a suitable assay and investigated 25 leukoplakia patients and 20 noncancer control subjects. Exfoliated cells were removed by a brush from multiple small areas of the oral mucosa, including the leukoplakia. Brushed samples were investigated for allelic imbalance (AI) at chromosomes 3p, 9p, 11q, and 17p using microsatellite markers known to show frequent alterations in oral precancer. AI was absent in all (137) of the samples of the 20 control subjects, yielding a specificity of 100%. AI was detected in exfoliated cell samples of 40% (10 of 25) of the leukoplakia lesions studied. Genetic changes were also found outside the leukoplakia lesions. Most frequent was AI at 9p (9 of 10). The noninvasive assay was validated against the biopsy results of the leukoplakia lesions yielding an estimate of sensitivity of 78% (7 of 9) and a positive predictive value of 100% (7 of 7). Altogether, these results show the feasibility of a noninvasive genetic screening approach for the detection and monitoring of oral precancer. This assay could therefore contribute to the secondary prevention of oral squamous cell carcinoma. [...]

Oral Cancer Foundation News Team - A2009-01-28T09:00:06-07:00January, 2009|Oral Cancer News|

Laser treatment for oral cancer

Source: abclocal.go.com Author: Leslie Toldo A quick zap from a painless laser could stop a deadly form of cancer. HealthFirst reporter Leslie Toldo tells us about this oral cancer breakthrough. Oral cancer has a high death rate compared to some other cancers, and the survival rate isn't improving. But this new treatment could stop it before it starts. They're often detected in a routine dental or doctor's exam -- red or white lesions called leukoplakia that can turn into serious, even deadly oral cancers. "I do happen to know people that have died of this kind of cancer, and so we watch it very closely," said oral cancer survivor Mike Hagerman. Hagerman, a former smoker, is a two-time oral cancer survivor. His leukoplakia is back. This time, he's part of a study testing a new photodynamic laser treatment designed to eliminate precancerous cells. Dr. Stuart Wong is a medical oncologist. "When the laser fires onto the lesion, it emits light at a very specific frequency that causes free oxygen radicals that destroy the lesion." Tested on the hand or used in the mouth on actual lesions, researchers say the laser doesn't hurt. it's a preventive measure that doctor say could save lives. "There is some emerging data that the better we can kill off these early precancerous lesions, that that might translate later down the road many, many years to a decreasing in the development of cancers and that's the goal," Wong noted. Oral cancer has a five-year survival rate [...]

Oral Cancer Foundation News Team - A2008-10-15T14:00:40-07:00October, 2008|Oral Cancer News|

Zapping oral cancer

Source: KGBT4.com Author: Martha Benavides This year, more than 34,000 people in the United States will be diagnosed with oral cancer -- a cancer that has a higher death rate than cervical cancer, Hodgkin's lymphoma, or skin cancer. Survival rates are not improving; but now, a new treatment may give doctors a way to stop oral cancers before they start. They're often detected in a routine dental or doctor's visit. Doctors say early detection can be crucial … red or white lesions called leukoplakia can turn into serious, even deadly oral cancers. Oral cancer has a five year survival rate of less than 50 percent. "I do happen to know people that have died of this kind of cancer and so we watch it very closely," said Mike Hagerman, a former smoker and a two-time oral cancer survivor. Now, Hagerman's leukoplakia is back. This time, he's part of a study testing a new photodynamic laser treatment designed to eliminate precancerous cells. "When the laser fires onto the lesion, it emits light at a very specific frequency that causes oxygen radicals that destroy the lesion, make it go away," stated Stuart Wong, M.D., a medical oncologist at the Medical College of Wisconsin in Milwaukee. Tested on the hand or used in the mouth on actual lesions, researchers say the laser doesn’t hurt. It’s a preventive measure that doctors say could save lives. "There is some emerging data that the better we can kill off these early precancerous lesions, that that might [...]

Oral Cancer Foundation News Team - A2008-08-24T07:17:40-07:00August, 2008|Oral Cancer News|

Laser Treatment Zaps Oral Cancer

Source: Jacksonville News (www.news4jax.com) Author: staff This year, more than 34,000 people in the United States will be diagnosed with oral cancer -- a cancer that has a higher death rate than cervical cancer, Hodgkin's lymphoma, or skin cancer. Survival rates are not improving; but now, a new treatment may give doctors a way to stop oral cancers before they start. They're often detected in a routine dental or doctor's exam … red or white lesions called leukoplakia that can turn into serious, even deadly oral cancers. "I do happen to know people that have died of this kind of cancer and so we watch it very closely," said Mike Hagerman, a former smoker and a two-time oral cancer survivor. Now, Hagerman's leukoplakia is back. This time, he's part of a study testing a new photodynamic laser treatment designed to eliminate precancerous cells. "When the laser fires onto the lesion, it emits light at a very specific frequency that causes oxygen radicals that destroy the lesion, make it go away," explained Stuart Wong, M.D., a medical oncologist at the Medical College of Wisconsin in Milwaukee. Tested on the hand or used in the mouth on actual lesions, researchers say the laser doesn’t hurt. It’s a preventive measure that doctor say could save lives. "There is some emerging data that the better we can kill off these early precancerous lesions, that that might translate later down the road many, many years to a decreasing in the development of cancers and that's [...]

Oral Cancer Foundation News Team - A2008-08-15T21:05:49-07:00August, 2008|Oral Cancer News|