The annual incidence of cancer in the United States is estimated at 439.2 per 100,000 persons, with an annual rate of deaths due to cancer of 163.5 per 100,000 persons. Cancer ranks second, just behind heart disease, as a cause of death in the United States.
Over the past 25 years, death rates have dropped in the United States for cancers of the lung and bronchus, prostate, colon and rectum, and stomach, while liver cancer death rates have increased. At least 42% of cancer cases in the United States may be preventable with lifestyle changes such as smoking cessation, weight loss, physical activity, alcohol use reduction or avoidance, improved nutrition, use of sunblock, and avoidance of tanning devices. Vaccination or antibiotic use can reduce the incidence of cancer-causing infections such as those due to hepatitis B and C viruses, human papillomavirus, and Helicobacter pylori.
1. What features help to differentiate a benign tumor from a malignant tumor?
2. What tissues give rise to a carcinoma, a sarcoma, and a lymphoma?
The annual incidence of cancer in the United States is estimated at 439.2 per 100,000 persons, with an annual rate of deaths due to cancer of 163.5 per 100,000 persons. Cancer ranks second, just behind heart disease, as a cause of death in the United States.
Over the past 25 years, death rates have dropped in the United States for cancers of the lung and bronchus, prostate, colon and rectum, and stomach, while liver cancer death rates have increased. At least 42% of cancer cases in the United States may be preventable with lifestyle changes such as smoking cessation, weight loss, physical activity, alcohol use reduction or avoidance, improved nutrition, use of sunblock, and avoidance of tanning devices. Vaccination or antibiotic use can reduce the incidence of cancer-causing infections such as those due to hepatitis B and C viruses, human papillomavirus, and Helicobacter pylori.
1. What features help to differentiate a benign tumor from a malignant tumor?
2. What tissues give rise to a carcinoma a sarcoma and a lymphoma?
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