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Ulceration on the left lower lip caused by cancer. The signs and symptoms of oral cancer depend on the location of the tumor but are generally thin, irregular, red and/or white patches in the mouth. The classic warning sign is a persistent rough patch with ulceration, and a raised border that is minimally painful.
It usually occurs within the mouth, although sometimes mucosa in other parts of the gastrointestinal tract, urinary tract, or genitals may be affected. [10] [11] [12] The cause of leukoplakia is unknown. [6] Risk factors for formation inside the mouth include smoking, chewing tobacco, excessive alcohol, and use of betel nuts.
Head and neck cancer is a general term encompassing multiple cancers that can develop in the head and neck region. These include cancers of the mouth, tongue, gums and lips (oral cancer), voice box (), throat (nasopharyngeal, oropharyngeal, [1] hypopharyngeal), salivary glands, nose and sinuses.
Smoker melanosis in a patient consuming 2 packs of cigarette per day. Smoking or the use of nicotine-containing drugs is the cause to Smoker's melanosis. [10] [11] Tar-components (benzopyrenes) are also known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause.
First signs of smoking-related health issues often show up as numbness in the extremities, with smoking being a major risk factor for heart attacks, chronic obstructive pulmonary disease (COPD), emphysema, and cancer, particularly lung cancer, cancers of the larynx and mouth, and pancreatic cancer. [20]
We've made massive strides against the deadly disease, but rates haven't fallen for people diagnosed with the disease who've never smoked.
The major risk factors are cigarette smoking and alcohol consumption, while betel nut is an additional factor in Taiwan.Different gene mutation sites in head and neck cancer between western countries and Taiwan have been reported.
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