Biology project, anyone know about leukemia?
I have a biology project (in french) to do about leukemia(leucemie) Does anyone know the answers to these questions?
Here are the four questions i don't understand and can't find the answers to:
1.How and why does this sickness develop?(Comment et pourquoi cette maladie se developpe-t-elle?)
2.Are there any complications possible?(Est-ce qu'il y a des complications possibles? Si oui, lesquelles et pourquoi?)
3.Is it possible to avoid this cancer?( Est-il possible de dépister cette maladie?)
4.What are the chances of surviving this cancer?(Quelles sont les chances de guérisson?)
- Anonymous1 decade agoFavorite Answer
1. In general, cancer occurs when cells divide without a check or a control. This uncontrolled division leads to faulty cells that do not perform the proper tasks - as in leukemia, or it produces a tumour as in most other cancers. Although many people refer to leukemia as a cancer of the blood, it is actually a cancer of the bone marrow that produces blood cells. In AML Leukemia, the cells that produce white blood cells are cancerous and produce a great number of nonfunctional WBCs.
It isn't known exactly what causes leukemia but there are several ideas about what exactly causes the uncontrolled division of these cells. It isn't fully understood why some people exposed to many risk factors do not develop leukemia while others do. Some of these risk factors include exposure to high amounts of radiation, previous rounds of chemotherapy, high exposure to benzene, smoking, some genetic problems such as Downs Syndrome, and sometimes faulty genes inherited from parent to child.
2. There are many complications that may occur. Some of the complications that my son had were enlargement of the spleen and liver, infections, and low blood counts. Other complications that may occur from treatment may include damage to other organs such as the kidneys, the heart, liver, and reproductive system. The biggest risk to leukemia patients is the risk of infection. This is because the immune system is essentially nonexistent and cannot fight infections.
3. It is often an unavoidable cancer. Many of the risk factors that contribute to the development of leukemia are unavoidable such as genetic conditions and treatment for previous cancers. Leukemia is one of the most commonly diagnosed cancers in children - children are generally accepted as having cancers that do not have lifestyle causes as most adults cancers do.
4. Survival rates vary between the types and subtypes of leukemia. There are four main types of leukemia split into acute and chronic illnesses: ALL, AML, CLL, and CML. Acute leukemias develop very quickly and are seen most often in children whereas chronic leukemias develop very slowly and are often diagnosed through routine blood tests in adults that have no symptoms. It's important to remember that a leukemia diagnosis is absolutely not a death sentence. It's treatable but you have to keep in mind that it does take lives. I know many children and adults that have gone on to live completely normal lives after getting their No Evidence of Disease (NED) status. Sometimes a patient does relapse but it is absolutely possible that a patient can reach remission and eventually NED status. There isn't a "cure" but it's generally accepted that after 5 years post treatment the leukemia is considered "cured." My son beat leukemia so it is possible - people do win their battles.
I hope this answers your question, I think I've about run out of room here. If you have any more questions, feel free to email me (firstname.lastname@example.org) or send me an IM (crazycanuckj).Source(s): My 3 year old son is a warrior who beat a Stage I FH Wilms' Tumour and Secondary Acute Myelogenous Leukemia and is still fighting hard against a Stage III Hepatoblastoma. http://www.caringbridge.org/visit/warrioreli
- gangadharan nairLv 71 decade ago
* Acute lymphocytic leukemia (ALL) is a fast-growing cancer in which the body produces a large number of immature white blood cells (lymphocytes). These cells are found in the blood, bone marrow, lymph nodes, spleen, and other organs. ALL makes up 80% of childhood acute leukemias. Most cases occur in children ages 3 - 7. The disease may also occur in adults.
* Acute myeloid leukemia (AML) is cancer that starts inside bone marrow, the soft tissue inside bones that helps form blood cells. The cancer grows from cells that would normally turn into white blood cells. Acute myeloid leukemia (AML) is one of the most common types of leukemia among adults. This type of cancer is rare under age 40. It generally occurs around age 65. (This article focuses on AML in adults.) AML is more common in men than women.
* Chronic lymphocytic leukemia (CLL) causes a slow increase in the number of white blood cells called B cells in the bone marrow. The cancerous cells spread from the blood marrow to the blood, and can also affect the lymph nodes and other organs. CLL eventually causes the bone marrow to fail and weakens the immune system. CLL primarily effects adults. The average age of patients with this type of leukemia is 70. It is rarely seen in people younger than 40. The disease is more common in Jewish people of Russian or East European descent, and is uncommon in Asians.
* Chronic myelogenous leukemia is cancer that starts inside bone marrow, the soft tissue inside bones that helps form blood cells. The cancer grows from cells that produce white blood cells.CML can occur in adults (usually middle-aged) and children. The disease affects 1 to 2 people per 100,000 and makes up 7 - 20% cases of leukemia. It is usually associated with a chromosome abnormality called the Philadelphia chromosome.
* Hairy cell leukemia (HCL) is a rare cancer of the blood. It affects B cells, a type of white blood cell (lymphocyte). HCL is caused by the abnormal growth of B cells. The cells can look "hairy" under the microscope because they have fine projections coming from their surface. It affects men more often than women. The average age of onset is 55. Hairy cell leukemia is rare.
The following organizations provide information on leukemia:
* National Cancer Institute -- www.cancer.gov/cancertopics/types/leukemia
* The Leukemia and Lymphoma Society - www.leukemia.orgSource(s): http://www.merck.com/mmpe/sec11/ch142/ch142a.html http://www.medicinenet.com/leukemia/article.htm http://www.mayoclinic.com/health/leukemia/DS00351 http://news.bbc.co.uk/2/hi/health/3244503.stm http://www.nlm.nih.gov/medlineplus/ency/article/00... http://www.nlm.nih.gov/medlineplus/ency/article/00... http://www.nlm.nih.gov/medlineplus/ency/article/00... http://www.nlm.nih.gov/medlineplus/ency/article/00... http://www.nlm.nih.gov/medlineplus/ency/article/00...
- 1 decade ago
The possible causes and chance of survival all depend on what type of Leukemia you're referring to. (e.g.- AML, ALL, CLL, CML...etc etc)
No single known cause for all of the different types of leukemia exists. The different leukemias likely have different causes. Known causes include natural and artificial ionizing radiation, viruses such as Human T-lymphotropic virus, and some chemicals, notably benzene and alkylating chemotherapy agents for previous malignancies. Use of tobacco is associated with a small increase in the risk of developing acute myeloid leukemia in adults. A few cases of maternal-fetal transmission have been reported.
Leukemia, like other cancers, results from somatic mutations in the DNA which activate oncogenes or deactivate tumor suppressor genes, and disrupt the regulation of cell death, differentiation or division. These mutations may occur spontaneously or as a result of exposure to radiation or carcinogenic substances and are likely to be influenced by genetic factors. Cohort and case-control studies have linked exposure to petrochemicals, such as benzene, and hair dyes to the development of some forms of leukemia.
Within these main categories, there are typically several subcategories. Finally, hairy cell leukemia and T-cell prolymphocytic leukemia are usually considered to be outside of this classification scheme.
* Acute lymphoblastic leukemia (ALL) is the most common type of leukemia in young children. This disease also affects adults, especially those age 65 and older. Standard treatments involve chemotherapy and radiation. The survival rates vary by age: 85% in children and 50% in adults. Subtypes include precursor B acute lymphoblastic leukemia, precursor T acute lymphoblastic leukemia, Burkitt's leukemia, and acute biphenotypic leukemia.
* Chronic lymphocytic leukemia (CLL) most often affects adults over the age of 55. It sometimes occurs in younger adults, but it almost never affects children. Two-thirds of affected people are men. The five-year survival rate is 75%. It is incurable, but there are many effective treatments. One subtype is B-cell prolymphocytic leukemia, a more aggressive disease.
* Acute myelogenous leukemia (AML) occurs more commonly in adults than in children, and more commonly in men than women. AML is treated with chemotherapy. The five-year survival rate is 40%. Subtypes of AML include acute promyelocytic leukemia, acute myeloblastic leukemia, and acute megakaryoblastic leukemia.
* Chronic myelogenous leukemia (CML) occurs mainly in adults. A very small number of children also develop this disease. Treatment is with imatinib (Gleevec) or other drugs. The five-year survival rate is 90%. One subtype is chronic monocytic leukemia.
* Hairy cell leukemia (HCL) is sometimes considered a subset of CLL, but does not fit neatly into this pattern. About 80% of affected people are adult men. There are no reported cases in young children. HCL is incurable, but easily treatable. Survival is 96% to 100% at ten years.
* T-cell prolymphocytic leukemia (T-PLL) is a very rare and aggressive leukemia affecting adults; somewhat more men than women are diagnosed with this disease. Despite its overall rarity, it is also the most common type of mature T cell leukemia; nearly all other leukemias involve B cells. It is difficult to treat, and the median survival is measured in months.
* Large granular lymphocytic leukemia may involve either T cell or NK cells; like hairy cell leukemia, which involves solely B cells, it is a rare and indolent (not aggressive) leukemia.Source(s): http://en.wikipedia.org/wiki/Leukemia
- ?Lv 44 years ago
Do a type of the cellular replication stages (prophase, metaphase.. and so on) otherwise, look by your bio e book and notice if something incredibly pastimes you.. do a undertaking which you come across exciting!
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- 1 decade ago
2. yes, you can die.
3. yes, you can kill yourself before the disease kills you.
4. well, you can like or you can die. two options... I'd say 50%
honestly, you should get a book and find the answers to all those questions, or just google it.