Navigation Links
Radiation Exposure Linked to Aggressive Thyroid Cancers
Date:4/20/2009

Environmental or therapeutic contact also led to poorer outcomes, study finds

MONDAY, April 20 (HealthDay News) -- Thyroid cancer patients who've previously been exposed to radiation have more aggressive disease and worse outcomes than other patients, a new study finds.

Researchers at Mount Sinai Hospital in Toronto studied 125 thyroid cancer patients who'd been exposed to radiation -- for example, in the workplace, through environmental exposure, or for treatment of acne or other benign conditions -- at least three years before they had surgery for their thyroid cancer.

The average age of the patients at time of radiation exposure was 19.4 years, and their thyroid cancers were diagnosed an average of 28.7 years later. The patients were followed for an average of 10.6 years after diagnosis. During that time, 16 percent suffered a recurrence of thyroid cancer, and 9 percent had cancer that spread to other areas of the body (distant metastases). At the final follow-up, 86 percent were alive and cancer-free, 4 percent were alive with recurrent thyroid cancer, 4 percent were alive with distant metastases, 4 percent had died of their cancer, and 2 percent had died of unrelated causes.

The researchers compared these patients to a group of 574 thyroid cancer patients who hadn't previously been exposed to radiation and found that the radiation-exposed patients were more likely to:

  • Undergo total or near-total removal of the thyroid -- 83 percent vs. 38 percent.
  • Require additional surgery -- 23 percent vs. 2 percent.
  • Have stage IV disease -- 16 percent vs. 5 percent.
  • Have distant metastases -- 9 percent vs. 2 percent.
  • To have thyroid cancer at follow-up -- 8 percent vs. 3 percent.
  • To have died of the disease -- 4 percent vs. 1.5 percent.

Dr. Raewyn M. Seaberg and colleagues said their findings show "that patients who have been exposed to radiation have more aggressive disease and worse clinical outcomes than other patients with thyroid cancer and, therefore, may require more aggressive treatment."

The study was published in the April issue of the Archives of Otolaryngology -- Head & Neck Surgery.

More information

The American Thyroid Association has more about thyroid cancer.



-- Robert Preidt



SOURCE: JAMA/Archives journals, news release, April 20, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Informational handout key to giving parents a better understanding of CT radiation risks
2. Prophylactic cranial irradiation in small cell lung cancer significantly increases survival
3. Different method of evaluating the urinary tract system reduces radiation dose
4. Radiation and drug combo helps boost efficacy of lung cancer treatment
5. Nucletron Announces Management Buy-Out to More Effectively Meet the Demands of Its Customers and the Radiation Therapy Community
6. Radiation therapy technique reduces length of prostate cancer treatment
7. Radiation therapy technique reduces length of prostate cancer treatment
8. Jefferson radiation oncologists use real-time system to plant seeds against cancer
9. Radiation Therapy Services Acquires North Carolina Facility
10. NASA, NSBRI Select 17 Proposals in Space Radiation Research
11. Breast Cancer Radiation Wont Hurt Immune Health
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Radiation Exposure Linked to Aggressive Thyroid Cancers
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... Conditions were ... at Cove Island Park on Sunday, with sunny skies, a light breeze and temperatures ... nearly $33,000. , The 5k Run and Walk and 1-mile walk were ...
(Date:4/29/2016)... ... 29, 2016 , ... A new study by a Johns ... hernia have better survival rates if surgery is performed early. Approximately one in ... diaphragm fails to form completely, letting abdominal organs into the chest cavity and ...
(Date:4/29/2016)... ... 2016 , ... The Wharton School of the University ... of the 2016 Wharton Business Plan Competition —as well as the Wharton ... the Committee Award for Most ‘Wow Factor,’ making them the first team in ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... announces the Gyrociser, an exercise invention which aids in proper muscle development. , ... Cooper, CEO and Creative Director of World Patent Marketing. "Globalization has threatened the ...
(Date:4/29/2016)... ... April 29, 2016 , ... Melanoma is the deadliest type of skin cancer. Although only ... majority of skin cancer deaths. More than 10,000 people are expected to die of melanoma ... 62, it is the one of the most commonly diagnosed cancers in young women. A ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... 2016  ValGenesis, Inc., the market leader ... today announced that a prominent world provider ... chronic kidney failure has selected ValGenesis Validation ... validation process. The global medical device manufacturer ... manage their validation processes electronically. Upon completion ...
(Date:4/27/2016)... PARIS , le 27 Avril 2016 /PRNewswire/ ... chiffre d,affaires a progressé de +5% sur le ... ventes récurrentes de consommables  Croissance de ... Mauna Kea Technologies (Euronext : ... multidisciplinaire d,endomicroscopie confocale laser, annonce aujourd,hui son chiffre ...
(Date:4/27/2016)... , April 27, 2016 Tie-up ... initiative to save newborns   ... women & newborns in collaboration with Breast Milk Foundation (BMF), ... first Pasteurized Human Milk Bank, ,Amaara, in Delhi-NCR today. This ... food source for infants and should be available to babies ...
Breaking Medicine Technology: