SEER – Oral Cancer News

Implications of the Oropharyngeal Cancer Epidemic

Source: Journal of Clinical Oncology Chaturvedi et al,1 analyzing specimens back to 1984, validate the long-held hypothesis that infection with human papillomavirus (HPV) has increased oropharyngeal squamous cell carcinoma (OPSCC) incidence in the US. They find the incidence of OPSCC in men—who have higher risks of both HPV-positive and HPV-negative OPSCC than women—similar to that of cervical cancer in women. From 1988 to 2004, incidence of HPV-negative OPSCC decreased in parallel with smoking whereas incidence of HPV-positive OPSCC increased at about 7.5% per year, so the percentage of OPSCC that was HPV-positive went from less than 20% to more than 70%. HPV-positive and HPV-negative OPSCC are etiologically and clinically distinct,2,3 with HPV-positive disease having better outcome.4–6 In the current study,1 the hazard ratio of 0.3 for HPV-positive/HPV-negative in survival analysis essentially balances the difference in prevalence so each form of OPSCC now accounts for a similar number of deaths. Notably, the authors found that outcomes for HPV-positive OPSCC have improved over time, whereas outcomes for HPV-negative OPSCC are as dismal as they were 25 years ago. The authors argue convincingly that vaccination to prevent oral HPV infections should be evaluated and that better treatments for both types of OPSCC should be developed. We are unlikely to get a better picture of the recent history of OPSCC in the United States. This study used all available OPSCC specimens from the three Surveillance, Epidemiology, and End Results (SEER) registries that participate in the Residual Tissue Repositories Program, analyzed them in several ways, [...]

Oral Cancer Foundation News Team - A2011-11-09T15:24:59-07:00November, 2011|Oral Cancer News|

New Study on Tonsillar Squamous Cell Carcinoma

Source: SAGE Journals Online Objective. To analyze outcomes in patients with squamous cell carcinoma (SCCA) of the tonsil from the years 1998 to 2006. To assess factors that may affect disease-specific survival, such as patient characteristics and/or treatment modality. Study Design and Setting. National Cancer Institute’s Surveillance Epidemiology and End Results (SEER) program. Subjects and Methods. The SEER database was used to perform a population-based cohort analysis for patients diagnosed with SCCA of the tonsil from 1998 to 2006. Disease-specific survival was correlated with sex, age, ethnicity, year of diagnosis, and treatment modality in a univariate Cox proportional hazards analysis and a multiple Cox-regression model with and without interaction effect. Results. Applied inclusion criteria resulted in 8378 patients. Of this patient cohort, 80% were male and 85% were white. The mean patient age at diagnosis was 58.1 years. On univariate and multivariate analyses, ethnicities other than white carried a significantly higher rate of disease-specific death (hazard ratio = 1.71, P

Oral Cancer Foundation News Team - A2011-08-02T10:29:43-07:00August, 2011|Oral Cancer News|

Oral tongue squamous cell carcinoma is on the rise in young caucasian females, age 18 to 44 years

Source: Journal of Clinical Oncology Abstract Purpose To evaluate the incidence of oral cavity squamous cell carcinoma (OCSCC) and oral tongue squamous cell carcinoma (OTSCC) in young white women, age 18 to 44 years. Patients and Methods We analyzed incidence and survival data from the Surveillance, Epidemiology and End Results (SEER) Program of the National Cancer Institute from 1975 to 2007 for OCSCC and OTSCC. Three cohorts were examined: all ages, age 18 to 44 years (ie, “young”), and age > 44 years. Individuals were stratified by sex and/or race. Percentage change (PC) and annual percentage change (APC) were calculated. Joinpoint regression analyses were performed to examine trend differences. Results Overall, incidence of OCSCC was decreasing for all ages. However, incidence was increasing for young white women (PC, 34.8; APC, 2.2; P < .05). Incidence of OTSCC was decreasing for all ages except in the age 18 to 44 years group (PC, 28.8; APC, 1.8; P < .05). Young white individuals had increasing incidence trends of OTSCC (white women: PC, 111.3; APC, 4; P < .05; young white men: PC, 43.7; APC, 1.6; P < .05). The APC of OTSCC was significantly greater in young white women compared with that in young white men (P = .007). Furthermore, incidence of SCC in all other subsites of the oral cavity was decreasing. Nonwhites had a decreasing incidence of OCSCC and OTSCC. Cause-specific survival was similar among whites age 18 to 44 and individuals older than age 44 years. Conclusion OTSCC [...]

Charlotte Parker2011-04-10T17:26:36-07:00April, 2011|Oral Cancer News|

Study Finds Few Second Cancers Attributable to Radiotherapy

Elsevier Global Medical News Author: MA Moon It appears that only 8% of second solid cancers can be attributed to radiotherapy for a first cancer, according to a report published online March 30 in the Lancet. This figure varies somewhat according to the site of the first solid tumor, with the lowest attributable risk (4%) in cancers of the eye or orbit and the highest attributable risk (24%) in cancers of the testes. Given that only a small proportion of second cancers among adult survivors are likely to be related to radiotherapy, it follows that most second cancers arise from other causes, such as genetics or lifestyle factors, said Amy Berrington de Gonzalez, D.Phil., of the National Cancer Institute, and her associates. "These findings can be used by physicians and patients to put the risk of radiation-related cancer into perspective when compared with the probable benefits of treatment," the researchers noted. Many studies have shown an association between receiving radiotherapy for a first solid tumor and subsequently developing a second solid tumor. However, the proportion of second cancers that might be related to radiotherapy has not been investigated before, they said. Dr. Berrington de Gonzalez and her colleagues used data from the U.S. SEER (Surveillance, Epidemiology, and End Results) cancer registry to perform "a comprehensive and systematic analysis of all first solid cancer sites in adults that are routinely treated with radiotherapy." They included 647,672 patients who were 5-year cancer survivors and were aged 20 years and older when they were diagnosed with a first primary invasive solid cancer in 1973-2002. The participants were followed for 5-34 years (mean follow-up, [...]

Oral Cancer Foundation News Team - A2011-04-04T12:51:20-07:00April, 2011|Oral Cancer News|

VELscope system honored by the WHO

Source: Dentistry IQ Author: Staff Jul 7, 2010 BURNABY, British Columbia—LED Dental has announced that the World Health Organization has recognized the VELscope enhanced oral assessment system as an innovative device that addresses global health concerns. In 2009, the WHO Department of Essential Health Technologies challenged the scientific and business communities to identify and develop innovative technologies to address global health concerns. On June 30, following months of evaluation, the organization officially recognized those innovative medical devices--either existing or under development--that address global health concerns and which are likely to be accessible, appropriate and affordable for use in low- and middle-income countries. The VELscope system was one of only eight commercialized devices so honored. “It is extremely gratifying to receive this prestigious honor,” said Peter Whitehead, founder and CEO of LED Dental and inventor of the VELscope system. “We created the VELscope system to improve the oral health of patients worldwide by helping dental practitioners discover everything from early-stage oral cancer to any number of more common oral abnormalities. This recognition from the World Health Organization is further reinforcement of what thousands of VELscope users have been telling us: that the VELscope system can help improve oral health in a very cost-effective and userfriendly manner.” Oral cancer kills one American every hour of every day. According to the SEER data base, oral cancer has a higher mortality rate than several better publicized cancers, such as cervical cancer and testicular cancer. Some oral cancers are now known to be linked to [...]

Charlotte Parker2010-07-08T13:14:47-07:00July, 2010|Oral Cancer News|