Mesothelioma Lawyer

Looking For a Mesothelioma Lawyer? Please remember that it is very important to find a Mesothelioma Lawyer as quickly as possible after you have been diagnosed with Mesothelioma the reason being, there is a statue of limitation from state to state, which means there is a time limit set with regards to how long you have to take action after your diagnosis of mesothelioma, and if the time is to long, your chances may be lessened in winning your case. Take action now and contact professional lawyers..

Mesothelioma and Asbestos Exposure Research
A very important question to ask when looking for a Mesothelioma Lawyer is how expenses attorney fees will be handled for the case. The process of filing for a lawsuit for mesothelioma cancer is not something that will happen over night. Preparation for the trial and the trial itself will take many months or sometimes even years.

What is Mesothelioma

Mesothelioma is a rare neoplasm that arises from mesothelial cells lining the parietal anvisceral pleura and can present in a localized or diffuse manner. The localized variant (solitary fibrous tumor) is very uncommon and usually presents as a well-defined, encapsulated tumor that is not associated with exposure to asbestos. Typically, the lesions are diagnosed as an asymptomatic mass on a chest radiograph. Complete surgical resection is the treatment of choice.

The diffuse variant presents as a locally aggressive tumor commonly associated with asbestos exposure (75%).A long latency period between asbestos exposure and the development of the disease has been reported.Although smoking alone is not a reported risk factor, other factors such as radiation therapy and various occupational exposures have been implicated.In the late 1990s an association between simian virus 40 (SV 40) and mesothelioma was investigated.

The clinical presentation of a patient with diffuse malignant pleural mesothelioma (MPM) is variable; therefore, a thorough clinical evaluation is essential. Dyspnea secondary to pleural effusion or encasement of the lung and chest pain from tumor infiltration into the chest wall and

adjacent organs are the most commonly reported symptoms. Nonspecific symptoms such as weight loss, anorexia, night sweats, and weakness also frequently are noted. Physical signs vary depending on the stage of the neoplasm. Early in the disease, decreased breath sounds secondary to pleural effusion may be noted. In advanced stages of the disease, palpable tumor invading the chest wall and abdomen or nodal involvement may be identified. Radiographic tests such as chest radiography, chest CT, and MRI play a major role in the evaluation of the patient with mesothelioma.

Depending on the extent of disease, the chest radiographic findings may be quite variable. Typically, chest radiography demonstrates pleural thickening with or without pleural effusion. Chest CT and MRI are particularly effective in determining the presence of advanced disease, such as transdiaphragmatic involvement or mediastinal organ invasion.Echocardiography also is helpful in ruling out pericardial invasion. In the future, positron emission tomography (PET) also may prove to be a useful tool in determining the extent of tumor invasion. A number of techniques are used to confirm the diagnosis of MPM, including thoracocentesis of pleural effusion and pleural biopsy (open, VATS, and closed).Open or VATS biopsy provides the best method to obtain a tumor sample sufficient to distinguish mesothelioma from other tumors such as adenocarcinoma and to determine the specific subtype of MPM. Frequently, immunohistochemistry techniques and electron microscopy performed by an experienced pathologist are required to confirm the diagnosis of MPM. Microscopically, malignant mesothelioma originates from mesothelial cells that line the pleural cavity. Three histologic subtypes of mesothelioma have been identified; these are epithelial, sarcomatous, and mixed histologies.The histologic subtype has been shown to affect survival dramatically, with epithelial histology having a more favorable prognosis than the other two subtypes.

Diseases of the Lungs and Mesothelium

On this page:
» Benign Tumors
» Malignant Tumors

Mesothelioma is a rare disorder and is often misdiagnosed. It is a disease that derives directly from the mesothelial cells in the serous membranes. But it is not uncommon for other growths to appear in the mesothelium, both cancerous and non cancerous.

Tumors of the mesothelium can be benign (non-cancerous) or cancerous. A malignant tumor of the mesothelium is called malignant mesothelioma, but because most mesothelial tumors are cancerous, the disease is often simply called mesothelioma.

Benign Tumors

Although uncommon, the mesothelium of certain female and male reproductive organs may develop a benign tumor called an adenomatoid tumor. In men, the tumor starts in the area where the sperm is carried from the testicles and in women it starts in the fallopian tubes. Another type of benign tumor that starts in the female reproductive organs is called a benign cystic mesothelioma.

A type of benign tumor that used to be called benign fibrous mesothelioma can form in the pleura around the lungs. It is now known that this type of tumor starts in the tissues under the mesothelium and therefore is not a type of mesothelioma. It is typically not cancerous, but can progress to cancer in some cases. A similar disease that forms in the peritoneum is called a fibrous tumor of the peritoneum. These types of tumors are often removed surgically, and no other treatment is needed.

Malignant Tumors

The most common form of malignant tumors in the mesothelium are metastatic tumors. That is, the tumors start in another part of the body and then the cancer metastasizes and spreads to the mesothelium. The ratio is between 7: 1 to 20: 1 for the occurrence of these types of tumors versus a mesothelioma. Mesothelioma derives directly from the mesothelial cells and does not migrate into the mesothelium from other organs.

The most common metastatic tumors that grow in the pleura derive from, in descending order:

• breast
• lung
• ovary
• stomach
• large intestine
• pancreas
• thyroid
• kidney

For the pericardial tumors from metastases, the most common originating organs are lung, breast and thyroid. In the peritoneum, the ovary, stomach, large intestine, pancreas and breast are the most common sources of metastatic tumors.

Introduction of Mesothelioma

DEFINITION

Malignant mesothelioma is a rare neoplastic lesion associated with asbestos exposure. There are three major histologic subtypes: epithelial (most common), sarcomatous, and mixed (epithelial/sarcomatous).

EPIDEMIOLOGY & DEMOGRAPHICS

• Associated with asbestos exposure (all fiber types)
• Over 3000 new cases diagnosed in U.S. annually
• More common in men as a result of asbestos exposure in the workplace
• Right-sided involvement is more common
• Incidence of mesothelioma increases with age; median age at presentation is >60 yr
• There are currently more than 8 million persons in the U.S. who are at risk for mesothelioma because of prior asbestos exposure

thorotrast, zeolite, and erionite fibers.

PHYSICAL FINDINGS & CLINICAL PRESENTATION • Dyspnea • Nonpleuritic chest pain • Fever, weight loss, sweats, fatigue, loss of appetite • Dysphagia, superior vena cava syndrome, Horner’s syndrome in advanced stages • Auscultation may reveal unilateral loss of breath sounds • Dullness on percussion may be present ETIOLOGY • Asbestos exposure • Other reported potentially causal factors include prior radiation therapy and extravasated

Epithelioid, Sarcomatoid and Biphasic Mesothelioma Cancer Cell Types

Epithelioid, Sarcomatoid and Biphasic Mesothelioma Cancer Cell Types

On this page:
» Epithelioid Mesothelioma
» Sarcomatoid Mesothelioma
» Biphasic Mesothelioma
» Mesothelioma Prognosis

Malignant mesothelioma is generally divided into three histological categories, or types of cells: epithelioid, sarcomatoid and biphasic mesothelioma. Within each of these mesothelioma cancer cell types, subtypes exist. Many mesothelioma patients display more than one cell type.

The diagnosis of mesothelioma cannot be specifically by lung x-rays or other types of imaging, because many different types of cancer can be present in the lungs. The images show only that a tumor may be present, but does not provide an indication of whether the tumor is mesothelioma. A biopsy must be performed where the mesothelioma cancer cell types are used to distinguish mesothelioma from other types of cancer, such as lung cancer.
Epithelioid Mesothelioma Cancer

Epithelioid mesothelioma is the most common cell type, constituting approximately 50% to 70% of all malignant mesothelioma. These cells are relatively uniform in shape and have a tubular pattern with a distinct cell nucleus. The individual cells are shaped like cubes or multi-sided boxes.

Because of the similarity between adenocarcinoma and mesothelioma cancer cells, they are often confused and mesothelioma can be misdiagnosed. Inspection of the cancer cells under high-powered microscopes and identification of unique characteristics of the chemical properties of the cells can help make the proper diagnosis. Learn more about epithelioid mesothelioma cancer.
Sarcomatoid Mesothelioma Cancer

Sarcomatoid mesothelioma is the least common type of mesothelioma cancer cell and accounts for approximately 10% to 15% of malignant mesothelioma. These cells typically have more of an oval, irregular shape and the nucleus of each cell is not as visible with a microscope as the epithelioid mesothelioma cancer cells. Because of the similarity of appearance, the sarcomatoid cancer cells can also easily be confused with the more typical sarcoma cancer cells. Learn more about sarcomatoid mesothelioma cancer.
Biphasic Mesothelioma Cancer

Approximately 20% to 40% of the mesothelioma cancer cells fall into the biphasic category, which is combination of the sarcomatoid and epithelioid types. The biphasic type can occur with the two types of cells intermixed continuously throughout the tumor, or with them in specific groupings. Transitional areas between the two cell types are often present. Learn more about biphasic mesothelioma cancer.
Prognosis Based on Cell Type

The mesothelioma cancer cell type does affect the prognosis. A study conducted on 167 patients showed that patients had the following mean survival times:
epithelioid ---- --8.5 months
sarcomatoid ---- 7 months
biphasic -------- 6 months

Treatment options are very similar for patients with the different cell types.

Mesothelioma Trials

Mesothelioma Trials

On this page:
» Clinical Trials
» Trial Phases

Mesothelioma is a relatively rare form of cancer linked to chronic asbestos exposure. There has been a sharp decline in asbestos exposure since the 1970s when asbestos use was halted for most applications. However, the incubation period for mesothelioma from initial exposure to asbestos to the onset of the disease varies from 20 to 50 years. As such, deaths related to this disease have risen recently and are expected to continue rising until the year 2020. This anticipated increase in incidence of mesothelioma has spurred considerable interest in clinical trials to develop better treatments for the deadly disease.

Mesothelioma Clinical Trials

Until recently, clinical trials for mesothelioma were difficult to conduct. The disease had a rapid onset and progression, leading to a relatively short survival period in which to conduct clinical trials. Also, there was a lack of basic understanding about the clinical biology of the disease and how the disease changed during progression.

Specific clinical measures were difficult to obtain in order to demonstrate the response to treatment. Recently, as part of the Alimta clinical trial, researchers developed new metrics that included factors other than just pleural thickening or abnormal breathing capability. A number of new clinical trials are now underway, many of them using these new measurement techniques. Hopefully these trials will lead to ways to stop or reverse the progression of mesothelioma.

Mesothelioma Trial Phases

Clinical trials for evaluating mesothelioma treatments are broken into four parts or phases. These Phases are described below (Source FDA).

Phase I
Researchers evaluate a drug or treatment in a small group of people/patients (20 to 80) for the first time to evaluate a drug's safety, determine the appropriate dosage range and identify side effects.

Phase II
Researchers treat a larger group of people/patients to determine if the drug treatment is effective and safe for the dosage levels determined in Phase I.

Phase III
Researchers administer the drug or treatment to a large group of people/patients to confirm the effectiveness of the drug and evaluate the drug's side effects. In this phase, the drug under evaluation will be compared to commonly used treatments. Additionally, researchers use Phase III trials to determine the proper protocol for the use of the drug when it is released for routine treatment.

Phase IV
Researchers perform follow-up studies from Phase III, primarily to obtain information that can be used when marketing the drug, such as drug risks, benefits and optimum use.

Types of Mesothelioma

Mesothelioma cancer affects the serous membranes that surround the major organs in the midsection of the body. Different organs can be affected by mesothelioma because the serous membranes surround the lungs, heart, abdomen and others. The most common type of mesothelioma is that which affects the lung lining, and is called pleural mesothelioma. Other types are pericardial mesothelioma, which affects the lining of the heart, and peritoneal mesothelioma, affecting the lining of the abdomen.

Mesothelioma, contrary to what many people think, is not a type of primary lung cancer. That is, mesothelioma does not originate in the lungs, but as described above, it starts in the serous membranes or lining around the lungs (or other organs). However, mesothelioma can spread to the lungs and when this occurs, it is considered to be a secondary lung cancer. Mesothelioma is also commonly referred to as an asbestos lung cancer. Technically, this is also incorrect, since mesothelioma does not originate in the lungs. Asbestosis is a type of asbestos lung disease that is often confused with mesothelioma.

Pleural Mesothelioma

Pleural mesothelioma represents about 75% of all mesotheliomas. The disease can grow quickly and enlarge the pleural space, causing it to fill with fluid. This fluid leads to the discomfort or pain associated with first detection of the disease. It is thought that pleural mesothelioma is caused by the inhaling of fibrous materials, including asbestos. These fibers lodge in the pleura and, over time, cause damage to the tissue layer and cancer erupts. Learn more about pleural mesothelioma.

Pericardial Mesothelioma

The rarest form of mesothelioma is that which affects the linings of the heart cavity, called the pericardium. Less than 10% of all mesothelioma cases are related to the heart. As in the lung, the rapid growth of the cancerous tumors can cause expansion of the tissue and accumulation of fluid. The fluid can interfere with the functioning of the heart and cause chest pain. Mesothelioma cases are known to be caused by exposure to asbestos; but it is completely unknown how the asbestos fibers enter the tissue layers surrounding the heart. Learn more about pericardial mesothelioma.

Peritoneal Mesothelioma

Mesothelioma of the abdomen is called peritoneal mesothelioma. The serous membrane surrounding the abdomen is known as the peritoneum. This disease accounts for approximately 10% to 20% of mesothelioma cases. In addition, a rare form of peritoneal mesothelioma affects the male testicles. The covering layer of the scrotum is actually an outpouching of the peritoneum. Peritoneal mesothelioma is due to the ingestion of fibrous materials, including asbestos. Learn more about peritoneal mesothelioma.