TAILIEUCHUNG - Cancer Statistics, 2003

Studies have shown that people differ in how their bodies process different chemicals, including the toxic chemicals in tobacco. Examinations of the connection between breast cancer risk and differences in the processing of these toxic tobacco chemicals have produced conflicting results. This is an active area of research that may allow the identification of women who are more susceptible to the cancer-causing chemicals in tobacco smoke. Does smoking affect the survival of women with breast cancer? The effect of smoking on the survival of women with breast cancer is unclear. Some studies have reported an association between smoking and an increase in the risk of death, while others found no. | CA Cancer J Clin 2003 53 5-26 I Cancer Statistics 2003 Ahmedin Jemal PhD DVM Taylor Murray Alicia Samuels MPH Asma Ghafoor MPH Elizabeth Ward PhD Michael J. Thun MD MS ABSTRACT Each year the American Cancer Society estimates the number of new cancer cases and deaths expected in the United States in the current year and compiles the most recent data on cancer incidence mortality and survival by using incidence data from the National Cancer Institute NCI and mortality data from the National Center for Health Statistics NCHS . Incidence and death rates are age adjusted to the 2000 US standard population. In the year 2003 we estimate that 1 334 100 new cases of cancer will be diagnosed and 556 500 people will die from cancer in the United States. Age-adjusted cancer death rates declined in both males and females in the 1990s though the magnitude of decline is substantially higher in males than in females. In contrast incidence rates continued to increase in females while stabilizing in males. African-American males showed the largest decline for mortality. However African Americans still carry the highest burden of cancer with diagnosis of cancer at a later stage and poorer survival within each stage compared with Whites. In spite of the continued decline in cancer death rates in the most recent time period the total number of recorded cancer deaths in the United States continues to increase slightly due to the aging and expanding population. CA Cancer J Clin 2003 53 5-26. American Cancer Society 2003. INTRODUCTION Cancer remains a major public health problem in the United States and in other developed countries. One in four deaths in the United States is caused by cancer. In order to provide an up-to-date perspective on the occurrence of cancer the American Cancer Society presents this overview of cancer frequency incidence mortality and survival statistics for the year 2003. Dr. Jemal is Program Director Cancer Occurrence Department of Epidemiology and Surveillance .

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