Mesothelioma Information

As with any disease or health condition, mesothelioma researchers have, over time, collected statistical information about mesothelioma. These statistics can help us learn about the proclivities of the disease and its incidence and potentially help future patients as we learn more about mesothelioma.

How common is Mesothelioma?

New cases of mesothelioma are diagnosed in between 2,500 and 3,000 Americans each year. These numbers, while significant, would indicate that mesothelioma is still a relatively rare disease, though incidence is expected to rise in the next decade according to projections.

What is the Typical Age at Diagnosis?

The first diagnosis of mesothelioma typically occurs in men and women between the ages of 50 and 70 years. Mesothelioma patients, certainly, have been diagnosed at ages younger than 50 and older than 70, but diagnoses for those age groups are considered statistical anomalies.

Does Mesothelioma Occur in a Particular or Racial Demographic More than Another?

Mesothelioma is much more common in men than women, due mostly to occupational asbestos exposure being more common among men of industrial labor sites. That is not to say, however, that women cannot be diagnosed with mesothelioma. In fact, recent evidence suggests that mesothelioma incidence in women may rise in the coming years as secondary exposures to asbestos can manifest in the form of a positive mesothelioma diagnosis. Also of note is that mesothelioma is much less common among African Americans than in Caucasians, the reasons for which researchers are still investigating.

What are Typical Patient Survival Rates Following a Mesothelioma Diagnosis?

As mesothelioma is often diagnosed in its advanced stages, the prognosis from mesothelioma is often in the range of a year after diagnosis. If diagnosed early enough, however, survival may potentially extend over many years. Patient survival rates are often contingent on the treatments available to the particular patient.

Other Mesothelioma Information

Mesothelioma Latency Period

Typically, there is a great deal of time between an individual's exposure to asbestos and the development of asbestos-related health complications. Mesothelioma is associated with a long-latency period (often 20-50 years) after exposure. Over a long period of time, lodged asbestos fibers slowly inflame the lung's external tissue, often serving as a pre-cursor to the development of malignant mesothelioma.

Adult Mesothelioma

Mesothelioma is most common in adults. Adults who have asbestos exposure history are typically those most at risk for the development of malignant mesothelioma. It can take many years for those exposed to asbestos exposure to exhibit the effects of exposure and, as such, mesothelioma is most often diagnosed in older individuals, often up to 40 years following exposure.

Child Mesothelioma

Childhood diagnosis of malignant mesothelioma is extremely rare, although it has been documented. Mesothelioma is known only to be caused by exposure to asbestos and takes many years following exposure to asbestos to manifest in adults. Generally speaking, childhood mesothelioma is considered to be unrelated to asbestos exposure.

Mesothelioma and Women

Many women that have been diagnosed with mesothelioma had no direct exposure to asbestos from working in industrial job settings. Instead they discover that they are victims of second-hand asbestos exposure that occurred while washing their husband's clothes that came home from work with asbestos fibers on them.

Mesothelioma Prevention

Mesothelioma is known only to be caused by exposure to asbestos, a naturally occurring fibrous mineral that was used for many years as an industrial insulation component. As such, the best mesothelioma prevention is the avoidance of exposure to asbestos. However, in recent years, physicians and cancer specialists have been developing a mesothelioma vaccine that will arm the body's immune system with cancer fighting anti-bodies and antigens in those who are at risk for the development of mesothelioma.

Mesothelioma Vaccine

Recent studies by researchers in the Netherlands have found promising results in preventative therapies for mesothelioma. Using cancer-fighting antigens within the body's immune system, mesothelioma patients have responded positively in most cases when treated with the mesothelioma vaccine. The hope is now that this therapy can be applied to those who may be at risk of developing mesothelioma in the future, particularly those who have been exposed to asbestos but have yet to develop asbestos disease.

Medical Timeline

Historical timeline containing important facts and developments related to the manufacture and use of asbestos and documented cases of mesothelioma cancer and other asbestos related diseases.

Mesothelioma Misspellings

The word “mesothelioma” is often misspelled by people searching on the internet for information about this asbestos cancer. In this section we list some of the most common misspellings that we have seen individuals use in their internet searches for mesothelioma.

Mesothelioma Misconceptions

There are several common myths and misconceptions about mesothelioma. Learn more about what the true facts are about this asbestos-related disease.

Mesothelioma Disease

Mesothelioma cancer is a rare disease that attacks the cells of the tissue that lines the body cavity called the mesothelium. It’s only known cause is exposure to asbestos fibers.

 Source http://www.mesothelioma.com/mesothelioma/information/

Mesothelioma Prognosis

What factors help determine a mesothelioma prognosis?

When an individual is diagnosed with mesothelioma or any other kind of cancer, one of the first questions they will have is “How long do I have to live?” This is a scary question - and a hard one to ask - but one for which most cancer patients will eventually seek an answer.

It is very difficult for oncologists and members of a patient’s medical team to give a definitive answer to this query. Indeed, every case is different and cancer can be an unpredictable disease. Sometimes, cases that look hopeless turn out to be not so bleak. In other cases, cancers that don’t look so bad progress quickly and result in an untimely death.

Overall, the prognosis has been rather grim for mesothelioma patients during these past few decades. Malignant mesothelioma is extremely aggressive and has a long latency period. Hence, cases are usually not detected until the disease has reached the advanced stages of cancer. As a result the prognosis for such patients is often not favorable; the mesothelioma survival rate following diagnosis is usually just a year or two. That doesn’t mean, however, that there won’t be exceptions and that this dour outlook will not change in years to come, especially as more and better treatments are developed.

Determining Prognosis

Currently, a number of different issues determine the mesothelioma patient’s prognosis. These include:

Type - Mesothelioma classified as one of three types, depending on the tissues involved. The epithelial type accounts for about 50 percent of all cases, sarcomatoid mesothelioma is seen in 15 percent of diagnosed patients, and 35% have the mixed type of the disease. Those with epithelial mesothelioma have a better survival rate than the other types.

Location - Mesothelioma is also classified on the basis of location. For example, pleural mesothelioma, which attacks the lining of the lung, is the most common, accounting for approximately 8o percent of all cases. Those with this type of cancer have the best rate of survival. Peritoneal mesothelioma, found in the lining of the abdomen, is the next most common and is diagnosed in about 10 -15 percent of mesothelioma victims. It is generally harder to treat. Less common types are very difficult to treat, including pericardial and testicular mesothelioma.

Stage of the disease - The prognosis for mesothelioma cancer depends on how early the disease is diagnosed and how soon treatment can begin. Because of the disease’s extended latency period, it is often not diagnosed until it has reached Stage 3 or 4, when mesothelioma symptoms finally appear. Sadly, many of these symptoms are common to a wide range of respiratory diseases including many that are less serious, like the flu or pneumonia. This often results in misdiagnosis.

Metastasis - When a mesothelioma diagnosis is finally made, oncologists will often find that the cancer has spread - or “metastasized” - from the location of the primary tumor - usually the pleura - to other parts of the body, often to the nearby organs as well as the lymph nodes. The extent of the metastases will determine what type of treatment is recommended as well as the prognosis.

General health of the patient - Simply put, younger and stronger patients with mesothelioma live longer than those of advanced age who have extant health problems. Seniors are often dealing with issues like heart disease, diabetes, and high blood pressure, making mesothelioma surgery as well as traditional cancer treatments much more risky and severely limiting treatment options.

Additional Mesothelioma Prognosis Factors

Mesothelioma Life Expectancy

Life expectancy for those diagnosed with malignant mesothelioma depends on a number of factors including, general patient health, cancer stage at diagnosis, and the eligibility of the patient for certain treatment options. Those diagnosed with early stage cancer and in generally good health will have a more favorable prognosis than those diagnosed with later-stage disease.

Mesothelioma Survival Rate

Most survival rates for cancer are quoted in regards to what is commonly known as the relative five-year survival rate. This indicates the number of patients who are still alive five years after they are diagnosed with the disease. Currently, the five-year survival rate for mesothelioma victims is approximately 10 percent. Though this is a very disappointing statistic, it represents a modest improvement from the numbers seen 10 years ago and is much higher than it was 20-30 years ago.

The current one-year survival rate for mesothelioma patients is about 40 percent. This has also increased significantly in the last 10 years. Unfortunately, however, the prognosis for most mesothelioma patients remains poor overall. Many still die less than a year after diagnosis, with the average survival rate being 10-11 months, according to the American Cancer Association.

Mesothelioma Remission

Mesothelioma is one of the most aggressive types of cancer and can quickly metastasize from its origin into the lungs, abdominal cavity, and lymph nodes. As a result, very few mesothelioma patients go into remission. However, if treated properly and early enough, many patients have been able to extend survival rates long beyond previous expectations. Treatment options include surgical resection, chemotherapy, and mesothelioma radiation.

Mesothelioma Survivors

While there is currently no cure for mesothelioma, many patients have had success in managing their cancer with traditional treatments like chemotherapy and surgical methods. Some patients diagnosed with mesothelioma have survived many years after what was an initially unfavorable prognosis.

Improving the Mesothelioma Prognosis

During the last decade, the plight of mesothelioma sufferers has gained more attention and more research dollars have been funneled towards the study of this disease and the discovery of new and novel drugs and treatments to provide more hope of a better prognosis for the mesothelioma sufferer.

Scientists have been working on new tests that strive to diagnose the disease at an earlier stage. For example, the Mesomark® assay is a simple blood test that measures the rate of Soluble Mesothelin-Related Peptides (SMRP) in the blood. This biomarker is released by mesothelioma cells into the bloodstream and SMRP can be elevated for many years before symptoms appear and an actual diagnosis of the disease is made.

Source http://www.mesothelioma.com/mesothelioma/prognosis/

Mesothelioma Stages

How is mesothelioma staged?

Mesothelioma stages are the assessment levels that doctors utilize to determine the extent of the cancer within the body. Mesothelioma is staged between 1 and 4, depending on severity. Stage 1 mesothelioma, for instance, is highly localized disease, with the tumor affecting only a limited area and organ tissue. Stage 4 cancer, on the other extreme, is extensive disease, which has spread far beyond the tumor’s origin, affecting other organ tissue and even blood or bone cells.

Given how rare mesothelioma is, a formal staging classification exists only for pleural mesothelioma, which affects the lining of the lung and chest cavity. Staging is determined at diagnosis, using any number of diagnostic procedures. Basic staging can be determined through the use of imaging scans, which will provide cancer specialists a visual representation of the extent of the tumor within the body. If the results of imaging scans are inconclusive or it appears that the disease is not localized, a physician may request the patient to undergo a needle or surgical biopsy, which can determine if the malignant cells have metastasized to the blood or lymph nodes through laboratory testing.

Mesothelioma Staging Systems

Today, there are three primary staging systems used to assess how far mesothelioma cancer has spread and each system uses four stages to describe the progression of the disease. It is the definition of each stage within the various systems that can vary slightly.

But chart Staging System

The Butcher staging system is the oldest and most commonly utilized staging system for mesothelioma. This system is focused on defining the location of the primary tumor mass in the body for each stage. The system doesn’t address how many cancer cells are present, how big the tumor is or the level of cancer present in the body overall.

TNM Staging System

The TNM Staging System, developed by the American Joint Committee on Cancer (AJCC), is similar to staging systems used for other types of cancer. It considers the characteristics of the tumor (T), whether or not lymph nodes are involved (N) and if the cancer has metastasized to other locations in the body (M).

Brigham Staging System

The Brigham Staging System also has four stages of progression and is very similar to the TNM Staging System. The primary difference between the two is that in addition to defining the location of the tumor, and assessing lymph node involvement and the presence of metastatic disease, the Brigham System also helps assess the possibility for and effectiveness of surgical intervention at each stage.

The Stages of Mesothelioma

The four stages of mesothelioma, as noted above, vary slightly within each system but can be generally characterized as indicated below. Please click into the individual pages to get more information about each stage in general and as is it defined within each staging system:

Stage 1 Mesothelioma

In Stage 1 the tumor is localized, there is no lymph node involvement, and the cancer has not spread to other organs or tissues. In this case, the cancer is likely restricted to one side of the pleura and surgical removal is typically feasible.

Stage 2 Mesothelioma

In Stage 2, the tumor is larger and has invaded the lung or diaphragm. Lymph nodes may also be involved. In this case, surgical resection may be possible though the cancer has likely spread to both sides of the pleura.

Stage 3 Mesothelioma

In Stage 3, mesothelioma has invaded a single region or area such as the chest wall, esophagus, and/or lymph nodes, and surgical resection is generally ruled out as a potential beneficial treatment.

Stage 4 Mesothelioma

In Stage 4, mesothelioma has invaded multiple regions such as different areas of the chest wall, the diaphragm and/or the pericardium. Lymph nodes are also involved and the cancer has spread to other organs. Surgical removal provides no value in this case as the disease has likely metastasized well beyond its origin.

Source http://www.mesothelioma.com/mesothelioma/stages/