Users with asbestos and Mesothelioma Patients?
It is inevitable that all those who worked with asbestos have mesothelioma? What are the symptoms?
Mesothelial cells normally line the body cavities including the pleura,peritoneum,pericardium,and testis. Malignancies involving mesothelial cells in these body cavities are known as Malignant Mesothelioma,which may be localized or diffuse. Diagnosis is difficult because the results of the analysis of effusion fluid tumor is usually not diagnosed. Most,but not all,Malignant Pleural Mesothelioma is associated with exposure to asbestos. In patients with malignant pleural mesothelioma was 77% were exposed to asbestos in the past. * Median survival for patients with malignant mesothelioma is 11 months. It is almost always fatal. Median survival according to histologic type is 9.4 months sarcomatous,12.5 months for epithelial,and 11 months for mixed. Approximately 15% of patients have indolent behavior. * Exposure to asbestos is associated with at least 50% of patients with malignant mesothelioma. Approximately 8 million people in the United States have been exposed to asbestos in the workplace. Family members are also exposed to asbestos embedded in the clothes of the worker. The combination of smoking and asbestos exposure significantly increases the risk of pleural Mesothelioma History:* Shortness of breath and chest pain nonpleuritic are the most common symptom presentation. * Breasts radiographs showed obliteration diaphragm,nodular pleural thickening,decreased breast size is,and / or radio-anchored sheet-shaped chest. * Distributed effusion in more than 50% of patients,and much of pleural effusion is veiled. * Chest pain,pleural pain,fatigue,fever,sweating and weight loss are other common symptoms accompanying. Patients may be asymptomatic,with evidence of pleural effusion by the way on physical examination or chest radiograph. Metastatic disease is rare in the presentation and contralateral pleural abnormalities are often a secondary disease associated with asbestos pleural disease rather than metastatic. * Approximately 60-90% of patients may have symptoms of chest pain or shortness of breath. Physical * Physical examination of pleural effusion are generally referred to to percussion and auscultation. * In rare cases,malignant mesothelioma manifests as spinal cord compression,brachial plexopathy,Horner syndrome,or syndrome of the upper vena cava. Death is usually due to infection or respiratory failure progression of mesothelioma. * Primary sites include the pleura (87%) peritoneum (5.1%),pericarditis (0.4%),and the right side of the chest (left side more than the ratio of 1.6:1) Causes:* Considerable proportion of patients who have been exposed to asbestos in asbestos factories,shipping yards,mines,or their homes. * The Crocidolite asbestos is associated with mesothelioma among miners,manufacturers (using asbestos),heating and construction workers. Rod-shaped amphiboles more carcinogenic than chrysotile. * Malignant mesothelioma was also related to radiation therapy of thorium dioxide and zeolite,silicate in the soil. * Etiological role of simian virus 40 mesotheliomas in the evil was also suggested. a single exposure to asbestos was associated with malignant mesothelioma,but SV was 40 is not alone. So,give some epidemiological data that SV 40 is cocarcinogen possible. Its direct role at this point is still controversial. * Interleukin 8 directly potentiates growth activity in mesothelial cell lines. Health care:Treatment options for malignant mesothelioma include the management of surgery,chemotherapy,radiotherapy and multimodal treatments. * About Chemotherapy Currently,cisplatin as single drug has been used as the standard drug for phase III clinical trials. No standard treatment options to improve survival. Most active substances are anthracyclines,platinum and alkylating agents,each of which produces 10-20% of the response. About Vogelzang et al presented results of a study Phase III of pemetrexed in combination with cisplatin versus cisplatin alone. Pemetrexed (500 mg/m2/day) and cisplatin (75 mg/m2/day) and cisplatin (75 mg/m2/day) was given Day 1 Both arms were given every 21 days. Median survival in cisplatin / pemetrexed arm was 12.1 months to 9.3 months for cisplatin alone. Response rate was 41.3% for cisplatin / pemetrexed arm and 16.7% for cisplatin. Folic acid and vitamin B-12 were given routinely,to prevent harmful effects of pemetrexed. This process-based model as a standard option for this disease. the 1999 Phase II study of Byrne et al with cisplatin (100 mg/m2) on day 1 and gemcitabine (1000 mg/m2) intravenously at days 1,8,and 15 of the 28-day cycle for 6 cycles showed responses rate of 47.6% (complete or partial response),42.8% (stable disease),and 9.5% (growth conditions). Median duration of response was 25 weeks,progression,survival was 25 weeks and overall survival was 41 weeks. Toxicity was mainly hematological and gastroenterological in nature. Several other combinations were considered effective,including cisplatin / Doxorubicin (adriamycin),mitomycin C /,bleomycin / intrapleural hyaluronidase,cisplatin / doxorubicin (Adriamycin),carboplatin / gemcitabine and cisplatin / vinblastine / gemcitabine combination of Mitomycin C,cisplatin produced the best results. OS isolation of mesothelial cell lines,several agents chemotherapeutic agents are being actively tested to evaluate their effectiveness. One explanation for poor response to chemotherapy is a low apoptotic evidenced by the low Bcl2 and Bax expression. These data suggest that apoptosis is a key phenomenon in the development of mesothelioma and histological differentiation. Numerous attempts were made by chemotherapy,but until recently,was a small study,classification systems used are different,and measures of illness were inaccurate. * The results of radiation with chemotherapy are also disappointing. The radiation did not influence survival,but caused considerable relief in 50% of patients treated for chest pain and chest wall metastasis. * The treatment is Trimodality combination of all 3 standard strategy (ie surgery,chemotherapy,radiotherapy). One approach involved the extrapleural pneumonectomy trimodality followed by combined chemotherapy and radiotherapy. Overall survival was 45% at 2 years and 22% at 5 years. No lymph nodes were negative prognostic factor. Epithelial survival was compared with the best type of sarcomatous or mixed (65% vs. 20% Y 2 and 27% vs 0% at 5 years). A survival-based system for Brigham stage was 22 months for Phase I,17 months for stage II and 11 months for phase III. the median overall survival was 17 months,while survival for the 36% rate of -2 and 5-year survival 14%. Epithelial cell type survival was better with one-year survival rate of 68% and 2-year survival of 46% -5. The different modes chemotherapy are considered useful in the treatment trimodality include cyclophosphamide / doxorubicin (Adriamycin) / cisplatin,carboplatin / Paclitaxel and cisplatin / methotrexate / vinblastine. External radiation therapy is delivered in standard fractionation of 5.5-6 week. Surgical Care:Surgical resection has been used as radiation and chemotherapy were ineffective primary. 2 surgical procedures used are peeled and pleurectomy with extrapleural pneumonectomy. * Pleurectomy with decortication procedure is more limited,and requires fewer cardiopulmonary reserves. This is a dissection of the parietal pleura,parietal pleura incision and peel from the visceral pleura followed by reconstruction. My illness 25% and mortality of 2%. It's difficult,because the procedure for tumor of the pleura surrounds the whole level of local recurrence is high. * Pneumonectomy extrapleural approach is broader and has higher mortality. In recent years,the mortality rate was reduced to 3.8%. This is a dissection of the parietal pleura,the distribution of pulmonary vascular and lung resection block,pleura,pericardium and diaphragm followed by reconstruction. Offers the best local control,it eliminates the entire pleural sac along with lung parenchyma. * With surgery alone,relapse is very high and most patients die after several months. At least half of patients who have a local control with surgery have distant metastasis at autopsy. Views:* In case of infection is recommended first,after consultation with the lung specialist is necessary if the infection resolved 2 weeks with appropriate antibiotic therapy. * Lung radiographs are required to monitor whether the infection is resolved. If the patient has diffuse calcification pleura and history of weight loss with chronic cough,a comprehensive evaluation of pulmonary specialist oncologist is necessary. * Request for thoracoscopy is warranted if the diagnosis is considered and the initial evaluation is not diagnostic. * Work history is important,and families from exposure to asbestos should also be evaluated. DIET:* Patients are usually wasting after surgery,chemotherapy and radiation. Good supportive care and assessment of nutritional status should be regularly. Patients should be the subject of nutrition. Subject:From the * Physical activity as soon as possible,it is important to avoid postoperative complications. * Pulmonary rehabilitation is a very useful because the extent of pulmonary resection in these patients.
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