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The above pictures show cancer of the voice
box. The picture on the left is a cancer of the epiglottis or top of the
voice box. The middle picture is a cancer of the true vocal cords and the
picture on the far right is a cancer of the sub-glottis or below the vocal
cords. Smoking is by far the major risk factor for developing laryngeal cancer. The use of alcohol and smoking further increases the risk of cancer of the larynx, oral cavity, and esophagus.
Video of a biopsy of a laryngeal cancer
The average age was 64 years. The average length of smoking was 61 pack years. (A pack year is one pack per day smoked in one year, or one-half pack per day smoked over two years.) 14 patients had quit smoking. Four patients had quit more than 25 years prior to developing the cancer. Exposure to the carcinogens in tobacco can cause permanent genetic damage in the cells and tumors can develop years later. Fifteen of these patients were treated with a total laryngectomy, or had to have their voice box removed.
Distribution of the Number of Pack Years Smoked to the Development of Laryngeal Cancer in 65 Patients, All of Whom Were Smokers. In the group of smoking patients only one had less than a 20 pack year history of smoking. This patient had a 5 pack history. One can achieve a 20 pack year history by smoking 20 packs per day for 40 years. Thus, if someone smokes more a half a pack per day or more he will have an far greater chance of developing cancer. Copyright 2003 Page Last Updated: 02/23/2004 Number of visits since 1/6/2004 |