Lung cancer is the uncontrolled growth of abnormal cells in one or both lungs. These abnormal cells do not carry out the functions of normal lung cells and do not develop into healthy lung tissue. As they grow, the abnormal cells can form tumors and interfere with the functioning of the lung, which provides oxygen to the body via the blood.

Lung cancer is the most common cause of death due to cancer in both men and women throughout the world. According to the U.S. National Cancer Institute, approximately one out of every 14 men and women in the U.S. is diagnosed with cancer of the lung at some point in their lifetime. Lung cancer is predominantly a disease of the elderly; almost 70% of people diagnosed with lung cancer are over 65 years of age, while less than 3% of lung cancers occur in people under 45 years of age.

What Causes Lung Cancer?

The development of lung cancer is strongly associated with cigarette smoking, approximately 90% of lung cancers are attributable to use of tobacco. Pipe and cigar smoking can also cause lung cancer, but the risk is not as high as with cigarette smoking. Tobacco smoke contains more than 4,000 chemical compounds, many of which are cancer causing (carcinogens). Passive smoking, i.e. the inhalation of tobacco smoke by non-smokers who live or work with smokers, is also an established risk factor for the development of lung cancer.

Genetic susceptibility (i.e. family history) may play a role in the development of lung cancer. Other causes of lung cancer include air pollution (from vehicles, industry, and power generation) and inhalation of asbestos fibres (usually in the workplace).

Lung Cancer Symptoms

Early symptoms and signs of lung cancer

There may be no symptoms at the onset of the disease. When present, common symptoms of lung cancer may include:

Coughing: This includes a persistent cough that doesn't go away or changes to a chronic smoker's cough, such as more coughing or pain.
Coughing up blood: Coughing up blood or rust-colored sputum (spit or phlegm) should always be discussed with your doctor.
Breathing Difficulties: Shortness of breath, wheezing or noisy breathing (called stridor) may all be signs of lung cancer.
Loss of Appetite: Many cancers cause changes in appetite, which may lead to unintended weight loss.
Fatigue: It is common to feel weak or excessively tired.
Recurring infections: Recurring infections, like bronchitis or pneumonia, may be one of the signs of lung cancer.
Signs of advanced stages of lung cancer

Advanced stages of lung cancer are often characterized by the spread of cancer to distant sites in the body. This may affect the bones, liver or brain. As other parts of the body are affected, new lung cancer symptoms may develop, including:

Bone pain
Swelling of the face, arms or neck
Headaches, dizziness or limbs that become weak or numb
Jaundice
Lumps in the neck or collar-bone region
Treatment

Treatment for cancer involves a combination of surgery to remove cancer cells, chemotherapy and radiation therapy to kill cancer cells. Lung cancer is incurable unless complete surgical removal of the tumour cells can be achieved. Surgery is the most effective treatment for lung cancer, but only a few percentage of lung cancers are suitable for surgery i.e. Stage I and II NSCLC and cancer that has not spread beyond the lung.

Radiation therapy may be used for both NSCLC and SCLC and is a good option for people who are not suitable for surgery or who refuse surgery. Chemotherapy is used for both NSCLC and SCLC. Chemotherapy drugs may be given alone or in combination with surgery or radiation therapy. Chemotherapy is the treatment of first choice for SCLC since it has usually spread extensively in the body by the time it has been diagnosed.

Also used in the treatment of lung cancer are targeted therapies. These are drugs (gefitinib and erlotinib) or antibodies (cetuximab, bevacizumab) that block the growth and spread of cancer by interfering with specific molecules involved in tumor growth and progression. They are used in some patients with NSCLC that does not respond to standard chemotherapy.

Lung Cancer: Causes, Symptoms and Treatments

Cancer is the abnormal, uncontrolled growth of cells in a particular body part. With continued growth, pieces of this tissue travel through the blood to different body parts and continue to grow in the new area. This is known as metastases. Breast cancer is one of the most common forms of cancer and affects about 1 in 8 women in the USA. Read on to know more details of breast cancer   breast anatomy, causes, symptoms, risk factors, detection, prevention, and of course treatment.

Anatomy: The main function of the breast is lactation through its milk-producing tissue that are connected to the nipple by narrow ducts. In addition, there is surrounding connective tissue, fibrous material, fat, nerves, blood vessels and lymphatic channels which complete the structure. This is essential to know as most breast cancers develop as small calcifications (hardened particles) in the ducts or as small lumps in the breast tissue which then continues to grow into cancer. The spread can happen through lymphatic or blood flow to other organs.

Warning signs/symptoms: The following are some symptoms that need to be watched out for if you have a predisposition to breast cancer.

    A lump in either of the breasts or armpits
    Change in size, shape, or contour of either breast
    Redness of your breast or nipple
    Discharge of clear or bloody fluid
    Thickening of breast tissue or skin that lasts through a period
    Altered look or feel of the skin on the breast or the nipple (dimpled, inflamed, scaly, or puckered)
    One area on the breast that looks very different from the other areas
    Hardened area under the breast skin

Either one or a combination of these should be an indication to get a detailed checkup done. Early diagnosis results in controlling the disease with minimal treatment and reduced complications.

Causes and risk factors: The exact cause for breast cancer is yet to be pinned down. However, risk factors are clearly identified, and women with risk factors need to watch out for warning signs.

    Family history: Of all the risk factors, the family history is the most important. Breast cancer runs in families, and if there is a first-degree relative with the breast cancer, the chances of developing it are almost double. Two genes BRCA1 and BRCA2 are the carriers of the disease, and this testing can be done in women to identify if they are at risk.
    Family history of other cancers: Even if there is no breast cancer, if there are other cancers that run in the family, watch out.
    Age: Women over 50 are at higher risk of developing breast cancer.
    Race: Caucasian and Jewish women are at higher risk of breast cancer than African-American women.
    Hormones: Greater exposure to the female hormone estrogen increases the chances of developing breast cancer. Women who use birth control pills for contraception and hormone replacement after menopause are at a higher risk of developing breast cancer.
    Gynecologic milestones: Women who have abnormal menstrual milestones need to watch out. These include those who attain menarche before 12 years of age, get pregnant after 30, attain menopause after 55, and have menstrual cycles shorter than 26 days or longer than 29 days.
    Obesity and alcohol abuse are also likely to increase a woman s chances of developing breast cancer.

Stages: Starting from stage 0, higher stages indicate advanced disease.

    Stage 0: The growth which has begun in the milk-producing tissue or the ducts has remained there (in situ) and not spread to any other area, including the rest of the breast.
    Stage I: The tissue slowly becomes invasive and has begun to affect the surrounding healthy tissue. It could have spread to the fatty breast tissue and some breast tissue may be found in the nearby lymph nodes.
    Stage II: The cancer at this stage grows considerably or spreads to other parts. There are chances that cancer may grow and also spread.
    Stage III: It may have spread to the bones or other organs but small amounts are present in up to 9 to 10 of the lymph nodes in the armpits and collar bones which makes it is difficult to fight.
    Stage IV: The cancer is widespread to far-flung areas like the liver, lungs, bones, and even the brain.

Screening: This is one of the most effective ways to identify the disease in its early stages. This will help in controlling cancer from spreading with minimal treatment.

    Self-examination: A thorough self-examination to look for changes in terms of shape, size, colour, contour, and firmness should be learned by all women. Watch for any discharge, sores, rashes, or swelling in the breasts, surrounding skin, and nipple. Examine them while standing and when lying down.
    In most women, annual screening mammograms are advised after the age of 40. However, in women who have a strong family history or genetic makeup, it is advisable to have screening mammograms starting at age 20 every 3 years and then annually from the age of 40.
    Women in high-risk categories should have screening mammograms every year and typically start at an earlier age.
    Ultrasound screening can also be given in addition to mammograms.
    Breast MRI is another way to screen for breast cancer if the risk is greater.

Breast Cancer Prevention: Now that there is so much awareness about causes and risk factors, there are definitely ways to prevent or delay the onset of the disease.

    Exercise and a healthy diet with reduced amount of alcohol are definitely effective in minimising the chances of developing cancer.
    Tamoxifen is used in women who are at high risk for breast cancer.
    Evista (raloxifene) which is used to treat osteoporosis after menopause. It is also widely used in preventing breast cancer.
    In high-risk women, breasts are surgically removed to prevent the development of cancer (preventive mastectomy).

Treatment: As with all cancers, treatment would depend on the stage at which it is identified and include a combination of chemotherapy, radiation, and surgery. As noted earlier, if you are at risk, look out for warning signs as early diagnosis is the key to maximum recovery.

Breast Cancer - Know More to Say 'No' More!

We have more than 200 bones in our body and each of them is susceptible to bone cancer. However, long bones in the arms and legs are most susceptible to this condition. Bone cancer can be primary or secondary. Primary bone cancer involves uncontrolled and abnormal cell division within the bones while secondary bone cancer refers to cancer that originated somewhere else in the body and later spread to the bones. While children and adults are equally at risk for primary bone cancer, adults and elderly people are more susceptible to secondary bone cancer. If diagnosed early enough, bone cancer can be treated and even cured with surgery, chemotherapy or radiation. 

Hence it is essential to recognize the signs and symptoms of bone cancer. Here s what you should look out for.

Pain in Bones: Pain is one the primary symptoms of bone cancer. As the tumour grows larger, this pain can become more intense. In its early stages, the pain may be experienced as a dull ache inside the bone or the affected part of the body. It may also increase or decrease according to your activity level or may be experienced only at night. However, not all bone pains signify  cancer  as this is also a symptom associated with osteoporosis.
Swelling: In some cases, the abnormal growth of bone cells can result in the formation of a lump of mass that may be felt through the skin. In other cases, the affected area may also show signs of swelling.
Breaking of the Bone: Cancer can weaken the bones and make them more brittle. This may make the bones more susceptible to fractures. A bone breaking in an area that has been painful or sore for a long period of time may be a sign of cancer. This is known as a pathologic fracture.
Reduced Flexibility: If the tumour is located near a joint, it may affect the range of movements possible and make simple actions uncomfortable. For example, a tumour around the knee may make walking and climbing stairs a painful exercise.
Other symptoms to look out for are sudden and drastic weight loss, tiredness, excessive sweating at night, fever and difficulty breathing in case cancer has spread to other organs. Since many of these symptoms are common to other medical disorders, you should conduct a doctor immediately if you notice any of them. A physical examination and a couple of tests along with a biopsy will be required to confirm a diagnosis of bone cancer.

Bone Cancer - 4 Signs You are Suffering from it!

Definition

Uterine fibroids are noncancerous growths of the uterus that often appear during childbearing years. Also called leiomyomas (lie-o-my-O-muhs) or myomas, uterine fibroids aren't associated with an increased risk of uterine cancer and almost never develop into cancer.

Uterine fibroids develop from the smooth muscular tissue of the uterus (myometrium). A single cell divides repeatedly, eventually creating a firm, rubbery mass distinct from nearby tissue. Fibroid location, size and number influence signs and symptoms:

TYPES

 	Submucosal fibroids: Fibroids that grow into the inner cavity of the uterus (submucosal fibroids) are more likely to cause prolonged, heavy menstrual bleeding and are sometimes a problem for women attempting pregnancy.
 	Subserosal fibroids: Fibroids that project to the outside of the uterus (subserosal fibroids) can sometimes press on your bladder, causing you to experience urinary symptoms. If fibroids bulge from the back of your uterus, they occasionally can press either on your rectum, causing a pressure sensation, or on your spinal nerves, causing backache.
 	Intramural fibroids: Some fibroids grow within the muscular uterine wall (intramural fibroids). If large enough, they can distort the shape of the uterus and cause prolonged, heavy periods, as well as pain and pressure.

Symptoms

In women who have symptoms, the most common symptoms of uterine fibroids include:

 	Heavy menstrual bleeding
 	Prolonged menstrual periods - seven days or more of menstrual bleeding
 	Pelvic pressure or pain
 	Frequent urination
 	Difficulty emptying your bladder
 	Constipation
 	Backache or leg pains

 	Abnormal menstrual bleeding, such as:
o	Heavier, prolonged periods that can cause anemia
o	Painful periods.
o	Spotting before or after periods.
o	Bleeding between periods.

 	Pelvic pain and pressure, such as:
o	Pain in the,abdomen pelvis, or low back.
o	Pain during sexual intercourse.
o	bloating and feelings of abdominal pressure.

 	Urinary problems, such as:
o Frequent urination
o	Leakage of urine (urinary incontinence).
o	kidney blockage following ureter blockage (rare).

 	Other symptoms, such as:
o	Difficulty or pain with bowel movements.
o	infertility. Sometimes, fibroids make it difficult to become pregnant.
o	Problems with pregnancy, such as placental abruption and premature labor.
o	miscarriage.

Tests and diagnosis

Ultrasound
Magnetic resonance imaging
Hysterosonography
Hysterosalpingography
Hysteroscopy

Uterine Fibroids - All You Should Know!

Uterine polyps are growths attached to the inner wall of the uterus that extend into the uterine cavity. Overgrowth of cells in the lining of the uterus (endometrium) leads to the formation of uterine polyps, also known as endometrial polyps. These polyps are usually noncancerous (benign), although some can be cancerous or can eventually turn into cancer (precancerous polyps).

Uterine polyps range in size from a few millimeters - no larger than a sesame seed - to several centimeters - golf-ball-size or larger. They attach to the uterine wall by a large base or a thin stalk.

You can have one or many uterine polyps. They usually stay contained within your uterus, but occasionally, they slip down through the opening of the uterus (cervix) into your vagina. Uterine polyps most commonly occur in women who are going through or have completed menopause, although younger women can get them, too.

Symptoms

Signs and symptoms of uterine polyps include:

Irregular menstrual bleeding - for example, having frequent, unpredictable periods of variable length and heaviness
Bleeding between menstrual periods
Excessively heavy menstrual periods
Vaginal bleeding after menopause
Infertility
Some women have only light bleeding or spotting; others are symptom-free.
When to see a doctor
Seek medical care if you have:

Vaginal bleeding after menopause
Bleeding between menstrual periods
Irregular menstrual bleeding
Causes

Hormonal factors appear to play a role. Uterine polyps are estrogen-sensitive, meaning they grow in response to circulating estrogen.

Risk factors

Risk factors for developing uterine polyps include:
Being perimenopausal or postmenopausal
Having high blood pressure (hypertension)
Being obese
Taking tamoxifen, a drug therapy for breast cancer
Complications

Uterine polyps might be associated with infertility. If you have uterine polyps and you're unable to have children, removal of the polyps might allow you to become pregnant, but the data are inconclusive.

Uterine Polyps - Symptoms, Causes & Complications Related To It! 

Even though brain aneurysms are becoming common these days, not all of them are required to be treated. In some cases, the physician may choose to observe an aneurysm closely before adopting any treatment measure. But in patients in whom an aneurysm has progressed to a severe level, there are two treatment options:

Open surgical clipping
Endovascular therapy or coiling
Open surgical clipping for brain aneurysms:
This procedure is typically performed by a neurosurgeon who makes an incision in the head. An opening in the bone is made, and then a clip is positioned by dissecting through the spaces of the brain. This aids in preventing the flow of blood into an aneurysm. In this procedure, the patient is required to stay in the hospital for two to three nights after which he or she is discharged.

Considerable modifications have been made in the open surgery techniques in the recent years. Neurosurgeons are now able to perform eye brow incisions or mini craniotomies for clipping an aneurysm. In these procedures, a small incision is cut out in the skin above the eyebrow for making a window. A tiny clip is placed across the mouth of an aneurysm to help it heal. But it is worthy of mention here that these are all invasive procedures and take relatively longer time to recover compared to the coiling process.

Endovascular coiling:

This treatment is also performed by a neurosurgeon, and it has been proved that this process is exceptionally suitable for patients with a ruptured aneurysm. Endovascular coiling is often done in coalesce with an angiogram, where a catheter is inserted into the vessel over the hip, which is then gradually carried to the vessels of the brain and finally to an aneurysm.
Then the coils are packed to the point where it rises from the blood vessel, which prevents the blood from flowing intothe blood vessel. Most patients undergoing this minimally invasive procedure can go home the day following the surgery. The success rate of this process is very high, and over 125,000 patients have been treated all across the globe with the help of detachable platinum coils.
Over the last few years, a substantial amount of advancements have taken place in the endovascular techniques. Recent developments show the use of flow diverting embolization devices, which are similar to a stent and are placed in the primary vessel, adjacent to an aneurysm. It diverts the flow away from an aneurysm and therefore, allows the neurosurgeons to treat the brain aneurysms, which were previously considered inaccessible and untreatable.
Both the procedures are quite efficient in treating a brain aneurysm. The most suitable option is dependent on a host of factors such as size, shape, location and overall health condition of the patient.

Brain Aneurysms - Treatment Options Available For It!

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