Which of the following statements about carcinogenesis is false?
Correct Answer: Papilloma viruses produce tumors in animals but not in humans
Description: Ans. is 'b' i.e. papilloma viruses produce tumours in animals but not in human "Human papilloma virus is the most common etiological factor for cervical cancer."Carcinogens and associated Cancers or Neoplasms:CarcinogensAssociated cancer or neoplasm* Alkylating agentsAcute myelocytic leukemia bladder cancer* AndrogensProstate cancer* Aromatic amines (dyes) (aniline dyes)Bladder cancer* ArsenicCancer of the lung, skin* AsbestosCancer of the lung, pleura, Peritoneum* Benzene vAcute myelocytic leukemia* ChromiumLung cancer* Diethylstilbestrol (Prenatal)Vaginal cancer (clear cell)* Epstein-Barr virusBurkitt's lymphoma, nasal T-Cell lymphoma* EstrogensCancer of the endometrium liver, breast* Ethyl alcoholCancer of the liver, esophagus, head and neck* Helicobacter pyloriGastric cancer* Hepatitis B or C virusLiver cancer* Human immunodeficiency virusNon-Hodgkin's lymphoma, Kaposi's sarcoma, squamous cell carcinomas (specially of the urogenital tract) Human papilloma virus* Human T cell lymphotropic virus type 1 (HTLV-1)Adult T cell leukemia/lymphoma* Immunosuppressive agents (azathioprine, cyclosporine, glucocorticoids)Non-Hodgkin's lymphoma* Nitrogen mustard gasCancer of the lung, head and neck, nasal sinuses* Nickel dustCancer of the lung, nasal sinuses* PhenacetinCancer of renal pelvis and bladder* Polycyclic hydrocarbonsCancer of the lung, skin (especially squamous cell carcinoma of scrotal skin)* * SchistosomiasisBladder cancer (squamous cell)* Sunlight (ultraviolet)Skin cancer (squamous cell & melanoma)* Tobacco (including smokeless)Cancer of the upper aerodigestive tract, bladder*Vinyl chlorideLiver cancer (angiosarcoma)
Category:
Pathology
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