Peritoneal Mesothelioma Symptoms

2009-12-03T18:46:00.000-08:00

A patient with peritoneal mesothelioma may not demonstrate symptoms of the cancer for 20 to 50 years after initial asbestos exposure since it often takes years for mesothelioma to manifest.Clinical symptoms at the time of presentation may include abdominal pain, abdominal mass, increased abdominal girth, distention of the abdomen, ascites (fluid in the abdomen), fever, weight loss, fatigue, anemia and digestive disturbances.

This symptoms occur because the cells cause thickening of the peritoneum and fluid build-up in the peritoneal layers. As the cancerous cells continue to divide overtime, tumors start to form. Most peritoneal mesothelioma symptoms are caused by this membrane thickening, fluid build-up, and eventual tumor development, all of which put pressure on internal organs.

Other Symptoms may include, but are not limited to, the following:

shortness of breath (dyspnea) - hoarseness, difficulty swallowing, and/or coughing up of blood
pleural effusion - a build up of too much fluid between the pleura (linings of the lungs and chest); a pleural effusion may cause chest pain and difficulty breathing (dyspnea), however, many cause no symptoms and are first discovered during the physical examination or seen on a chest x-ray.
pain in the chest - may sometimes be felt in upper abdomen, shoulder, or arm

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Peritoneal Mesothelioma

2009-12-02T17:55:00.000-08:00

Peritoneal mesothelioma, a cancer of the lining of the abdominal cavity, is less common than the pleural form, comprising approximately one-fifth to one-third of the total number of mesothelioma cases diagnosed. Only 100 to 500 cases are diagnosed in the US each year, making up less than 30% of all mesothelioma cases.

The latency period appears to be shorter for asbestos-exposed individuals with symptoms appearing 20-30 years after exposure rather than the 30-40 year latency more commonly associated with pleural mesothelioma.

Peritoneal mesothelioma is a cancer affecting the abdominal lining, or peritoneum (paira-tin-e-um), which is why is is sometimes referred to as abdominal mesothelioma. This membrane supports and covers the organs of the abdomen.

The peritoneum is a membranous layer that is made up of two 'sub-layers' called the parietal and visceral layers. The parietal layer covers the abdominal cavity, while the visceral layer surrounds abdominal organs. Together these two layers provide support and protection for abdominal organs and the abdominal cavity as a whole.

Cells in these linings secrete a fluid which allows organs to move against one another. For instance, as the intestines move food through the body. The cells of the mesothelium are designed to create fluid, but the cancer can cause them to overproduce, creating a build up of excess fluid in the abdominal cavity.

Because pleural mesothelioma is more common and often spreads to the peritoneal cavity, it is important to determine if pleural mesothelioma is the primary cancer.

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