Cancer
Cancer is characterized by the uncontrolled growth of abnormal cells in the body. Cancer affects one in every three persons born in developed countries and is a major cause of sickness and death throughout the world. Though it has been known since antiquity, significant improvements in cancer treatment have been made since the middle of the 20th century, mainly through a combination of timely and accurate diagnosis, selective surgery, radiation therapy, and chemotherapeutic drugs. Such advances actually have brought about a decrease in cancer deaths (at least in developed countries), and grounds for further optimism are seen in laboratory investigations into elucidating the causes and mechanisms of the disease. Owing to continuing advances in cell biology, genetics, and biotechnology, researchers now have a fundamental understanding of what goes wrong in a cancer cell and in an individual who develops cancer—and these conceptual gains are steadily being converted into further progress in prevention, diagnosis, and treatment of this disease.
Types of cancer:
1.carciomas: these are malingnant tumors that grow in skin and nerves like breast,lung,stomach,pancreas,brain,eye cancer.
2.sarcomas: these are malignant tumors that grow in bone and muscles like bone tumors and muscle tumors.
3.leukemias :these are malignant growth of wbc.it is also called blood cancer.
4.lymphomas : lymphomas affect the lymphatic system.it can occur in any part of body including liver,bonemarrow and spleen.
Cause:-
Drinking alcohol
Smoking
Taking tobacco
Genetic factor, hereditary
chemicals
X-ray, gamma ray, radium
U.V. rays from sun
Eating colored food fried food
Damaged and untreated wound
Biological factors: -
HBV causes liver cancer; human papiloma virus causes cervical cancer, helicobacter pylori cause stomach cancer.
Symptoms:-
Appearance of tumors
Change in digestive and bowel habits
Long term cough and hoarseness of voice
Swelling of any body part
Unexplained weight loss
Diagnosis: cancer can be detected by pathological test .these include biopsy,test of body fluid,blood test,x-ray test.
Preventive measure:-
Avoid the use of tobacco, smoking and alcohol
Follow healthy food practice
Use of sun block cream in day time
Stop unwanted x-ray checkup
Support cancer education
Regular physical exercise
Treatment : the treatment of cancer depend upon the nature of cancer.
1.Surgery: for breast,colon,lung,stomach,uterus cancer by surgrical removal of cancer cells,tissues
2.Radiotherapy: for bladder,cervix,skin,brain cancer by penetrating cancer cell by radiations.
3.Chemotherapy: for lukemia and lymphomas by using anticancer drugs.
Cancer is characterized by the uncontrolled growth of abnormal cells in the body. Cancer affects one in every three persons born in developed countries and is a major cause of sickness and death throughout the world. Though it has been known since antiquity, significant improvements in cancer treatment have been made since the middle of the 20th century, mainly through a combination of timely and accurate diagnosis, selective surgery, radiation therapy, and chemotherapeutic drugs. Such advances actually have brought about a decrease in cancer deaths (at least in developed countries), and grounds for further optimism are seen in laboratory investigations into elucidating the causes and mechanisms of the disease. Owing to continuing advances in cell biology, genetics, and biotechnology, researchers now have a fundamental understanding of what goes wrong in a cancer cell and in an individual who develops cancer—and these conceptual gains are steadily being converted into further progress in prevention, diagnosis, and treatment of this disease.
Types of cancer:
1.carciomas: these are malingnant tumors that grow in skin and nerves like breast,lung,stomach,pancreas,brain,eye cancer.
2.sarcomas: these are malignant tumors that grow in bone and muscles like bone tumors and muscle tumors.
3.leukemias :these are malignant growth of wbc.it is also called blood cancer.
4.lymphomas : lymphomas affect the lymphatic system.it can occur in any part of body including liver,bonemarrow and spleen.
Cause:-
Drinking alcohol
Smoking
Taking tobacco
Genetic factor, hereditary
chemicals
X-ray, gamma ray, radium
U.V. rays from sun
Eating colored food fried food
Damaged and untreated wound
Biological factors: -
HBV causes liver cancer; human papiloma virus causes cervical cancer, helicobacter pylori cause stomach cancer.
Symptoms:-
Appearance of tumors
Change in digestive and bowel habits
Long term cough and hoarseness of voice
Swelling of any body part
Unexplained weight loss
Diagnosis: cancer can be detected by pathological test .these include biopsy,test of body fluid,blood test,x-ray test.
Preventive measure:-
Avoid the use of tobacco, smoking and alcohol
Follow healthy food practice
Use of sun block cream in day time
Stop unwanted x-ray checkup
Support cancer education
Regular physical exercise
Treatment : the treatment of cancer depend upon the nature of cancer.
1.Surgery: for breast,colon,lung,stomach,uterus cancer by surgrical removal of cancer cells,tissues
2.Radiotherapy: for bladder,cervix,skin,brain cancer by penetrating cancer cell by radiations.
3.Chemotherapy: for lukemia and lymphomas by using anticancer drugs.
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