Respiration and Respiratory Systems - реферат по прочим предметам

 

Тезисы:

  • Up to the time of World War II, cancer of the lung was a relatively rare condition.
  • Since then, many further studies in diverse countries have confirmed this conclusion.
  • The incidence of lung cancer mortality in women, however, is increasing.
  • The reason for the carcinogenicity of tobacco smoke is not known.
  • In some cases a small tumour metastasis in the skin may be the first sign of the disease.
  • Survival from lung cancer has improved very little in the past 40 years.
  • Therefore, attention has been turned to prevention by every means possible.
  • Persons exposed to radon daughters are at risk for lung cancer.
  • Some types of lung cancer are unrelated to cigarette smoking.
  • But in multifactorial disease, this is not possible.
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