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Friday, January 2, 2009
8:01 PM | Posted by
aepsar |
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The uterine cervix is the lower, narrow part of the uterus (womb) that connects the uterus with the vagina. It is part of the female reproductive system.
Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through changes known as dysplasia, in which abnormal cells begin to appear in the cervical tissue. Later, cancer cells start to grow and spread more deeply into the cervix and to surrounding areas.
Significance of cervical cancer
Thanks to widespread screening with the Pap test (Pap smear), the number of deaths due to cervical cancer has been decreasing. Screening tests have risks, however (refer to the PDQ summary on Screening for Cervical Cancer); prevention of cervical cancer may offer fewer risks and more benefits.
Cervical cancer prevention
Many cases of cervical cancer are associated with known risk factors for the disease. Some of the risk factors cannot be avoided, but many can.
HPV Infection: Cervical infection with HPV is the primary risk factor for cervical cancer. There are over 80 types of human papillomavirus (HPV). Approximately 30 types are transmitted sexually (passed from one person to another by sexual contact) and can infect the cervix. About half of these have been linked to cervical cancer. However, HPV infection is very common and only a very small number of women infected with untreated HPV will develop cervical cancer. A vaccine to prevent infection with the two types of HPV that cause approximately 70 percent of cervical cancers, and the two types of HPV that cause 90 percent of genital warts, has been approved by the U.S. Food and Drug Administration (FDA), and other vaccines are under study. The approved vaccine provides protection against infection with these HPV types for at least five years. How much longer the protection lasts is under study.
Sexual History: HPV infections that cause cervical cancer are spread mainly through sexual contact. Women who begin having sexual intercourse at an early age and women who have had many sexual partners are at a greater risk of HPV infection and developing cervical cancer. Some methods used to prevent sexually transmitted diseases (STDs) reduce the risk of cervical cancer. The use of barrier methods of birth control and/or gels that kill sperm offer some protection but do not completely protect against STDs.
Reproductive History: Having a high number of full-term pregnancies (7 or more) increases the risk of cervical cancer.
Use of Oral Contraceptives: Long-term use of oral contraceptives (5 years or more) increases the risk of cervical cancer.
Screening History: Receiving regular gynecological exams and Pap tests helps to prevent cervical cancer. Abnormal changes in the cervix can be detected (found) by the Pap test and treated before cancer develops. Women who do not regularly have Pap tests have an increased risk of cervical cancer.
Smoking: Cigarette smoking is associated with an increased risk of cervical cancer.
Diet: Several studies have suggested that certain micronutrients (vitamins and minerals) may reduce the risk of cervical cancer, but this has not been proven.
Knowing the risk factors for cervical cancer can help you avoid them.
Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through changes known as dysplasia, in which abnormal cells begin to appear in the cervical tissue. Later, cancer cells start to grow and spread more deeply into the cervix and to surrounding areas.
Significance of cervical cancer
Thanks to widespread screening with the Pap test (Pap smear), the number of deaths due to cervical cancer has been decreasing. Screening tests have risks, however (refer to the PDQ summary on Screening for Cervical Cancer); prevention of cervical cancer may offer fewer risks and more benefits.
Cervical cancer prevention
Many cases of cervical cancer are associated with known risk factors for the disease. Some of the risk factors cannot be avoided, but many can.
HPV Infection: Cervical infection with HPV is the primary risk factor for cervical cancer. There are over 80 types of human papillomavirus (HPV). Approximately 30 types are transmitted sexually (passed from one person to another by sexual contact) and can infect the cervix. About half of these have been linked to cervical cancer. However, HPV infection is very common and only a very small number of women infected with untreated HPV will develop cervical cancer. A vaccine to prevent infection with the two types of HPV that cause approximately 70 percent of cervical cancers, and the two types of HPV that cause 90 percent of genital warts, has been approved by the U.S. Food and Drug Administration (FDA), and other vaccines are under study. The approved vaccine provides protection against infection with these HPV types for at least five years. How much longer the protection lasts is under study.
Sexual History: HPV infections that cause cervical cancer are spread mainly through sexual contact. Women who begin having sexual intercourse at an early age and women who have had many sexual partners are at a greater risk of HPV infection and developing cervical cancer. Some methods used to prevent sexually transmitted diseases (STDs) reduce the risk of cervical cancer. The use of barrier methods of birth control and/or gels that kill sperm offer some protection but do not completely protect against STDs.
Reproductive History: Having a high number of full-term pregnancies (7 or more) increases the risk of cervical cancer.
Use of Oral Contraceptives: Long-term use of oral contraceptives (5 years or more) increases the risk of cervical cancer.
Screening History: Receiving regular gynecological exams and Pap tests helps to prevent cervical cancer. Abnormal changes in the cervix can be detected (found) by the Pap test and treated before cancer develops. Women who do not regularly have Pap tests have an increased risk of cervical cancer.
Smoking: Cigarette smoking is associated with an increased risk of cervical cancer.
Diet: Several studies have suggested that certain micronutrients (vitamins and minerals) may reduce the risk of cervical cancer, but this has not been proven.
Knowing the risk factors for cervical cancer can help you avoid them.
8:01 PM | Posted by
aepsar |
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Doctors cannot always explain why one person gets cancer and another doesn’t. However, scientists have studied general patterns of cancer in the population to learn what things around us and what things we do in our lives may increase our chance of developing cancer.
Anything that increases a person’s chance of developing a disease is called a risk factor; anything that decreases a person’s chance of developing a disease is called a protective factor. Some of the risk factors for cancer can be avoided, but many cannot. For example, although you can choose to quit smoking, you cannot choose which genes you have inherited from your parents. Both smoking and inheriting specific genes could be considered risk factors for certain kinds of cancer, but only smoking can be avoided. Prevention means avoiding the risk factors and increasing the protective factors that can be controlled so that the chance of developing cancer decreases.
Although many risk factors can be avoided, it is important to keep in mind that avoiding risk factors does not guarantee that you will not get cancer. Also, most people with a particular risk factor for cancer do not actually get the disease. Some people are more sensitive than others are to factors that can cause cancer. Talk to your doctor about methods of preventing cancer that might be effective for you.
Anything that increases a person’s chance of developing a disease is called a risk factor; anything that decreases a person’s chance of developing a disease is called a protective factor. Some of the risk factors for cancer can be avoided, but many cannot. For example, although you can choose to quit smoking, you cannot choose which genes you have inherited from your parents. Both smoking and inheriting specific genes could be considered risk factors for certain kinds of cancer, but only smoking can be avoided. Prevention means avoiding the risk factors and increasing the protective factors that can be controlled so that the chance of developing cancer decreases.
Although many risk factors can be avoided, it is important to keep in mind that avoiding risk factors does not guarantee that you will not get cancer. Also, most people with a particular risk factor for cancer do not actually get the disease. Some people are more sensitive than others are to factors that can cause cancer. Talk to your doctor about methods of preventing cancer that might be effective for you.
6:36 PM | Posted by
aepsar |
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Definition of cervical cancer: Cancer that forms in tissues of the cervix (the organ connecting the uterus and vagina). It is usually a slow-growing cancer that may not have symptoms but can be found with regular Pap tests (a procedure in which cells are scraped from the cervix and looked at under a microscope).
General Information About Cervical Cancer
Cervical cancer is a disease in which malignant (cancer) cells form in the tissues of the cervix.
The cervix leads from the uterus to the vagina (birth canal).
Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through changes known as dysplasia, in which cells that are not normal begin to appear in the cervical tissue. Later, cancer cells start to grow and spread more deeply into the cervix and to surrounding areas.
Human papillomavirus (HPV) infection is the major risk factor for development of cervical cancer.
Infection of the cervix with human papillomavirus (HPV) is the most common cause of cervical cancer. Not all women with HPV infection, however, will develop cervical cancer. Women who do not regularly have a Pap smear to detect HPV or abnormal cells in the cervix are at increased risk of cervical cancer.
Other possible risk factors include the following:
1. Giving birth to many children.
2. Having many sexual partners.
3. Having first sexual intercourse at a young age.
4. Smoking cigarettes.
5. Oral contraceptive use ("the Pill").
6. Weakened immune system.
There are usually no noticeable signs of early cervical cancer but it can be detected early with yearly check-ups.
Early cervical cancer may not cause noticeable signs or symptoms. Women should have yearly check-ups, including a Pap smear to check for abnormal cells in the cervix.
Possible signs of cervical cancer include vaginal bleeding and pelvic pain.
These and other symptoms may be caused by cervical cancer. Other conditions may cause the same symptoms. A doctor should be consulted if any of the following problems occur:
The following procedures may be used:
The prognosis (chance of recovery) depends on the following:
General Information About Cervical Cancer
Cervical cancer is a disease in which malignant (cancer) cells form in the tissues of the cervix.
The cervix leads from the uterus to the vagina (birth canal).
Cervical cancer usually develops slowly over time. Before cancer appears in the cervix, the cells of the cervix go through changes known as dysplasia, in which cells that are not normal begin to appear in the cervical tissue. Later, cancer cells start to grow and spread more deeply into the cervix and to surrounding areas.
Human papillomavirus (HPV) infection is the major risk factor for development of cervical cancer.
Infection of the cervix with human papillomavirus (HPV) is the most common cause of cervical cancer. Not all women with HPV infection, however, will develop cervical cancer. Women who do not regularly have a Pap smear to detect HPV or abnormal cells in the cervix are at increased risk of cervical cancer.
Other possible risk factors include the following:
1. Giving birth to many children.
2. Having many sexual partners.
3. Having first sexual intercourse at a young age.
4. Smoking cigarettes.
5. Oral contraceptive use ("the Pill").
6. Weakened immune system.
There are usually no noticeable signs of early cervical cancer but it can be detected early with yearly check-ups.
Early cervical cancer may not cause noticeable signs or symptoms. Women should have yearly check-ups, including a Pap smear to check for abnormal cells in the cervix.
Possible signs of cervical cancer include vaginal bleeding and pelvic pain.
These and other symptoms may be caused by cervical cancer. Other conditions may cause the same symptoms. A doctor should be consulted if any of the following problems occur:
- Vaginal bleeding.
- Unusual vaginal discharge.
- Pelvic pain.
- Pain during sexual intercourse.
The following procedures may be used:
- Pap smear: A procedure to collect cells from the surface of the cervix and vagina. This procedure is also called a Pap test.
- Colposcopy: A procedure in which a colposcope (a lighted, magnifying instrument) is used to check the vagina and cervix for abnormal areas. Tissue samples may be taken using a curette (spoon-shaped instrument) and checked under a microscope for signs of disease.
- Biopsy: If abnormal cells are found in a Pap smear, the doctor may do a biopsy. A sample of tissue is cut from the cervix and viewed under a microscope by a pathologist to check for signs of cancer.
- Pelvic exam: An exam of the vagina, cervix, uterus, fallopian tubes, ovaries, and rectum. A speculum is also inserted into the vagina and the doctor or nurse looks at the vagina and cervix for signs of disease. A Pap test of the cervix is usually done.
- Endocervical curettage: A procedure to collect cells or tissue from the cervical canal using a curette (spoon-shaped instrument). Tissue samples may be taken and checked under a microscope for signs of cancer.
The prognosis (chance of recovery) depends on the following:
- The stage of the cancer (whether it affects part of the cervix, involves the whole cervix, or has spread to the lymph nodes or other places in the body).
- The type of cervical cancer.
- The size of the tumor.
- The stage of the cancer.
- The size of the tumor.
- The patient's desire to have children.
- The patient’s age.
Thursday, January 1, 2009
11:26 PM | Posted by
aepsar |
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In principle, all people can take steps to lower their risk for heart disease and heart attack.
Prevent and control high blood cholesterol
High blood cholesterol is a major risk factor for heart disease. Preventing and treating high blood cholesterol includes eating a diet low in saturated fat and cholesterol and high in fiber, keeping a healthy weight, and getting regular exercise. All adults should have their cholesterol levels checked once every five years. If yours is high, your doctor may prescribe medicines to help lower it. See our cholesterol fact sheet.
Prevent and control high blood pressure
Lifestyle actions such as healthy diet, regular physical activity, not smoking, and healthy weight will help you to keep normal blood pressure levels and all adults should have their blood pressure checked on a regular basis. Blood pressure is easily checked. If your blood pressure is high, you can work with your doctor to treat it and bring it down to the normal range. A high blood pressure can usually be controlled with lifestyle changes and with medicines when needed.
Prevent and control diabetes
People with diabetes have an increased risk of heart disease but can reduce their risk. Also, people can take steps to reduce their risk for diabetes in the first place, through weight loss and regular physical activity. For more information about diabetes, see CDC's diabetes program Web site.
No tobacco
Smoking increases the risk of high blood pressure, heart disease, and stroke. Never smoking is one of the best things a person can do to lower their risk. And, quitting smoking will also help lower a person’s risk of heart disease. A person's risk of heart attack decreases soon after quitting. If you smoke, your doctor can suggest programs to help you quit smoking. For more information about tobacco use and quitting, see CDC's tobacco intervention and prevention source Web site.
Moderate alcohol use
Excessive alcohol use increases the risk of high blood pressure, heart attack, and stroke. People who drink should do so only in moderation and always responsibly. More information on alcohol can be found at CDC's alcohol and public health Web site.
Maintain a healthy weight
Healthy weight status in adults is usually assessed by using weight and height to compute a number called the "body mass index" (BMI). BMI usually indicates the amount of body fat. An adult who has a BMI of 30 or higher is considered obese. Overweight is a BMI between 25 and 29.9. Normal weight is a BMI of 18 to 24.9. Proper diet and regular physical activity can help to maintain a healthy weight. You can compute your BMI at CDC's nutrition and physical activity program Web site.
A man walking briskly.
Regular physical activity
Adults should engage in moderate level physical activities for at least 30 minutes on most days of the week. For more information, see CDC's nutrition and physical activity program Web site.
Diet and nutrition
Along with healthy weight and regular physical activity, an overall healthy diet can help to lower blood pressure and cholesterol levels and prevent obesity, diabetes, heart disease, and stroke. This includes eating lots of fresh fruits and vegetables, lowering or cutting out added salt or sodium, and eating less saturated fat and cholesterol to lower these risks. For more information, see CDC's nutrition and physical activity program Web site.
Related Guidelines and Recommendations.
Prevent and control high blood cholesterol
High blood cholesterol is a major risk factor for heart disease. Preventing and treating high blood cholesterol includes eating a diet low in saturated fat and cholesterol and high in fiber, keeping a healthy weight, and getting regular exercise. All adults should have their cholesterol levels checked once every five years. If yours is high, your doctor may prescribe medicines to help lower it. See our cholesterol fact sheet.
Prevent and control high blood pressure
Lifestyle actions such as healthy diet, regular physical activity, not smoking, and healthy weight will help you to keep normal blood pressure levels and all adults should have their blood pressure checked on a regular basis. Blood pressure is easily checked. If your blood pressure is high, you can work with your doctor to treat it and bring it down to the normal range. A high blood pressure can usually be controlled with lifestyle changes and with medicines when needed.
Prevent and control diabetes
People with diabetes have an increased risk of heart disease but can reduce their risk. Also, people can take steps to reduce their risk for diabetes in the first place, through weight loss and regular physical activity. For more information about diabetes, see CDC's diabetes program Web site.
No tobacco
Smoking increases the risk of high blood pressure, heart disease, and stroke. Never smoking is one of the best things a person can do to lower their risk. And, quitting smoking will also help lower a person’s risk of heart disease. A person's risk of heart attack decreases soon after quitting. If you smoke, your doctor can suggest programs to help you quit smoking. For more information about tobacco use and quitting, see CDC's tobacco intervention and prevention source Web site.
Moderate alcohol use
Excessive alcohol use increases the risk of high blood pressure, heart attack, and stroke. People who drink should do so only in moderation and always responsibly. More information on alcohol can be found at CDC's alcohol and public health Web site.
Maintain a healthy weight
Healthy weight status in adults is usually assessed by using weight and height to compute a number called the "body mass index" (BMI). BMI usually indicates the amount of body fat. An adult who has a BMI of 30 or higher is considered obese. Overweight is a BMI between 25 and 29.9. Normal weight is a BMI of 18 to 24.9. Proper diet and regular physical activity can help to maintain a healthy weight. You can compute your BMI at CDC's nutrition and physical activity program Web site.
A man walking briskly.
Regular physical activity
Adults should engage in moderate level physical activities for at least 30 minutes on most days of the week. For more information, see CDC's nutrition and physical activity program Web site.
Diet and nutrition
Along with healthy weight and regular physical activity, an overall healthy diet can help to lower blood pressure and cholesterol levels and prevent obesity, diabetes, heart disease, and stroke. This includes eating lots of fresh fruits and vegetables, lowering or cutting out added salt or sodium, and eating less saturated fat and cholesterol to lower these risks. For more information, see CDC's nutrition and physical activity program Web site.
Related Guidelines and Recommendations.
11:24 PM | Posted by
aepsar |
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If the blood supply to the heart muscle is cut off, a heart attack can result. Cells in the heart muscle do not receive enough oxygen and begin to die. The more time that passes without treatment to restore blood flow, the greater the damage to the heart. Having high blood pressure or high blood cholesterol, smoking, and having had a previous heart attack, stroke, or diabetes can increase a person's chances of having a heart attack.
Symptoms of a Heart Attack
The five major symptoms of a heart attack are—
* Pain or discomfort in the jaw, neck, or back.
* Feeling weak, light-headed, or faint.
* Chest pain or discomfort.
* Pain or discomfort in arms or shoulder.
* Shortness of breath.
Symptoms of a Heart Attack
The five major symptoms of a heart attack are—
* Pain or discomfort in the jaw, neck, or back.
* Feeling weak, light-headed, or faint.
* Chest pain or discomfort.
* Pain or discomfort in arms or shoulder.
* Shortness of breath.
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11:10 PM | Posted by
aepsar |
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Some conditions as well as some lifestyle factors can put people at a higher risk for developing heart disease. In principle, all persons can take steps to lower their risk of heart disease and heart attack by addressing these risk factors. Control of risk factors is especially need by people who already have heart disease.
Conditions
Blood Cholesterol Levels
Cholesterol is a waxy substance produced by the liver or consumed in certain foods. It is needed by the body, and the liver makes enough for the body's needs. When there is too much cholesterol in the body—because of diet and the rate at which the cholesterol is processed—it is deposited in arteries, including those of the heart. This can lead to narrowing of the arteries, heart disease, and other complications.
Some cholesterol is often termed "good," and some often termed "bad." A higher level of high–density lipoprotein cholesterol, or HDL, is considered "good," and gives some protection against heart disease. Higher levels of low–density lipoprotein, or LDL, are considered "bad" and can lead to heart disease. A lipoprotein profile can be done to measure several different forms of cholesterol, as well as triglycerides (another kind of fat) in the blood.
Doctor taking a patient's blood pressure.
High Blood Pressure
High blood pressure is another major risk factor for heart disease. It is a condition where the pressure of the blood in the arteries is too high. There are often no symptoms to signal high blood pressure. Lowering blood pressure by changes in lifestyle or by medication can lower the risk of heart disease and heart attack.
Diabetes Mellitus
Diabetes also increases a person's risk for heart disease. With diabetes, the body either doesn't make enough insulin, can't use its own insulin as well as it should, or both. This causes sugars to build up in the blood. About three–quarters of people with diabetes die of some form of heart or blood vessel disease. For people with diabetes, it is important to work with a healthcare provider to help in managing it and controlling other risk factors.
Behavioral Factors
Tobacco Use
Tobacco use increases the risk of heart disease and heart attack. Cigarette smoking promotes atherosclerosis and increases the levels of blood clotting factors, such as fibrinogen. Also, nicotine raises blood pressure, and carbon monoxide reduces the amount of oxygen that blood can carry. Exposure to other people's smoke can increase the risk of heart disease even for nonsmokers.
Diet
Several aspects of peoples' dietary patterns have been linked to heart disease and related conditions. These include diets high in saturated fats and cholesterol, which raise blood cholesterol levels and promote atherosclerosis. High salt or sodium in the diet causes raised blood pressure levels.
Physical Inactivity
Physical inactivity is related to the development of heart disease. It also can impact other risk factors, including obesity, high blood pressure, high triglycerides, a low level of HDL (good) cholesterol, and diabetes. Regular physical activity can improve risk factor levels.
Obesity
Obesity is excess body fat. It is linked to higher LDL (bad) cholesterol and triglyceride levels and to lower HDL (good) cholesterol, high blood pressure, and diabetes.
Alcohol
Excessive alcohol use leads to an increase in blood pressure, and increases the risk for heart disease. It also increases blood levels of triglycerides which contributes to atherosclerosis.
Other Factors
Heredity
Heart disease can run in the family. Genetic factors likely play some role in high blood pressure, heart disease, and other vascular conditions. However, it is also likely that people with a family history of heart disease share common environments and risk factors that increase their risk.
Conditions
Blood Cholesterol Levels
Cholesterol is a waxy substance produced by the liver or consumed in certain foods. It is needed by the body, and the liver makes enough for the body's needs. When there is too much cholesterol in the body—because of diet and the rate at which the cholesterol is processed—it is deposited in arteries, including those of the heart. This can lead to narrowing of the arteries, heart disease, and other complications.
Some cholesterol is often termed "good," and some often termed "bad." A higher level of high–density lipoprotein cholesterol, or HDL, is considered "good," and gives some protection against heart disease. Higher levels of low–density lipoprotein, or LDL, are considered "bad" and can lead to heart disease. A lipoprotein profile can be done to measure several different forms of cholesterol, as well as triglycerides (another kind of fat) in the blood.
Doctor taking a patient's blood pressure.
High Blood Pressure
High blood pressure is another major risk factor for heart disease. It is a condition where the pressure of the blood in the arteries is too high. There are often no symptoms to signal high blood pressure. Lowering blood pressure by changes in lifestyle or by medication can lower the risk of heart disease and heart attack.
Diabetes Mellitus
Diabetes also increases a person's risk for heart disease. With diabetes, the body either doesn't make enough insulin, can't use its own insulin as well as it should, or both. This causes sugars to build up in the blood. About three–quarters of people with diabetes die of some form of heart or blood vessel disease. For people with diabetes, it is important to work with a healthcare provider to help in managing it and controlling other risk factors.
Behavioral Factors
Tobacco Use
Tobacco use increases the risk of heart disease and heart attack. Cigarette smoking promotes atherosclerosis and increases the levels of blood clotting factors, such as fibrinogen. Also, nicotine raises blood pressure, and carbon monoxide reduces the amount of oxygen that blood can carry. Exposure to other people's smoke can increase the risk of heart disease even for nonsmokers.
Diet
Several aspects of peoples' dietary patterns have been linked to heart disease and related conditions. These include diets high in saturated fats and cholesterol, which raise blood cholesterol levels and promote atherosclerosis. High salt or sodium in the diet causes raised blood pressure levels.
Physical Inactivity
Physical inactivity is related to the development of heart disease. It also can impact other risk factors, including obesity, high blood pressure, high triglycerides, a low level of HDL (good) cholesterol, and diabetes. Regular physical activity can improve risk factor levels.
Obesity
Obesity is excess body fat. It is linked to higher LDL (bad) cholesterol and triglyceride levels and to lower HDL (good) cholesterol, high blood pressure, and diabetes.
Alcohol
Excessive alcohol use leads to an increase in blood pressure, and increases the risk for heart disease. It also increases blood levels of triglycerides which contributes to atherosclerosis.
Other Factors
Heredity
Heart disease can run in the family. Genetic factors likely play some role in high blood pressure, heart disease, and other vascular conditions. However, it is also likely that people with a family history of heart disease share common environments and risk factors that increase their risk.
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