Infectious causes of cancer
Infectious Causes of Cancer is a topic that explores the relationship between certain infections and the development of cancer. It is a field of study within oncology and infectious diseases that has significant implications for cancer prevention and treatment.
Overview[edit | edit source]
Certain pathogens, including viruses, bacteria, and parasites, have been identified as potential causes of cancer. These infectious agents can directly cause changes in cells that lead to cancer, or they can create conditions within the body that increase the risk of cancer development.
Viruses[edit | edit source]
Several viruses have been linked to cancer, including:
- Human papillomavirus (HPV): This virus is the primary cause of cervical cancer, and it can also cause other types of cancer, including anal cancer, oropharyngeal cancer, and penile cancer.
- Hepatitis B and C viruses (HBV and HCV): These viruses are the leading causes of liver cancer.
- Human immunodeficiency virus (HIV): This virus does not cause cancer directly, but it increases the risk of certain cancers, including Kaposi's sarcoma and non-Hodgkin lymphoma.
Bacteria[edit | edit source]
Certain bacteria can also contribute to cancer development:
- Helicobacter pylori: This bacterium is a major cause of stomach cancer and mucosa-associated lymphoid tissue (MALT) lymphoma.
Parasites[edit | edit source]
Some parasites have been linked to cancer, including:
- Schistosoma haematobium: This parasite is associated with bladder cancer.
- Clonorchis sinensis and Opisthorchis viverrini: These parasites are associated with bile duct cancer.
Prevention and Treatment[edit | edit source]
Preventing and treating infections can significantly reduce the risk of certain cancers. Vaccines are available for some cancer-causing viruses, including HPV and HBV. Antibiotics can treat H. pylori infection. Antiviral drugs can manage HIV and HCV infections.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD
