The long latency period attached to mesothelioma means that the symptoms of this disease can take many years to manifest, making both diagnosis and effective treatment very difficult. And even when the symptoms do become evident, which can take several decades, the symptoms are so generalised and non-specific that they could be put down to any number of more common diseases. This makes it hard for even experienced doctors to make a quick and conclusive diagnosis with mesothelioma patients. The symptoms of this disease can often be confused with pneumonia during its early stages.

Some of the most common symptoms of pleural mesothelioma (which is the most common form of the disease) are shortness of breath and chest pains. This may be accompanied by a persistent cough, and all of these symptoms stem from the build up of fluid between the lining of the lung and the chest cavity. This is known as pleural effusion. This type of the disease starts in the chest cavity and can then spread to other parts of the body. Pleural mesothelioma sufferers may also begin to display severe breathing difficulty, weight loss and fever as well as trouble swallowing and even swelling of the face and neck. Some patients may also develop a rasping voice and start coughing up blood. However, there are other patients that may not show any significant symptoms at all.

The symptoms for patients who suffer from peritoneal mesothelioma (a rarer form of the disease) are slightly different. This type of the disease starts in the abdomen and can spread form there. Patients of peritoneal mesothelioma can display abdominal pain and swelling, nausea, loss of appetite and vomiting. They can also suffer breathing problems, and chest pain in addition to these symptoms. These symptoms result from tumours that lean against the abdominal wall. Bowel obstruction, anaemia, fever and problems with blood clotting may also affect peritoneal mesothelioma patients.

The rarest form of this disease is pericardial mesothelioma, which starts in the cavity surrounding the heart. With pericardial mesothelioma, the tumours grow in the tissues that surround the heart and can spread from there. Pericardial mesothelioma sufferers may experience chest pain, shortness of breath, persistent coughing and palpitations.

As the disease moves into the later stages, the symptoms for all types of mesothelioma become more acute and obvious, although they can still often be put down to another illness. It is therefore important for patients to inform their doctor if they have been exposed to asbestos at any point – or even if they suspect they may have been exposed to asbestos. This will enable the doctor to make a more informed diagnosis rather than basing his diagnosis on guess work. It is also important not to ignore any of these symptoms, especially if they are experienced over a long period. Many people can be exposed to asbestos inadvertently (e.g. through the clothes of someone that has worked with asbestos) so it is important to visit your doctor should any of these symptoms manifest.

With pleural mesothelioma being the most common form of the disease, the symptom associated with this form of the cancer are the most common ones that are displayed by patients. However, it is important to be fully aware of the symptoms for all three types of mesothelioma, particularly for those who have worked in high risk professions where they may have been exposed to asbestos.

Most people who have worked with asbestos in the past do not begin to show symptoms of mesothelioma until thirty to forty years later. By this time, the disease is already spreading and with the delay in diagnosis, makes it impossible to treat in many cases before it is too late. However, the cause, effects and symptoms of mesothelioma are now becoming more widely known by professionals and lay people. This awareness, coupled with the current clinical trials that are being carried out by a variety of organizations gives patients the hope that an effective treatment will one day be available for all stages of the disease.

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