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Mesothelioma Cancer Online
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New Chemotherapy Agents and combinations of agents are generating improved results for mesothelioma cancer patients. PDT (Photodynamic therapy) is a type of mesothelioma cancer treatment based on the premise that single-celled organisms, if first treated with certain photosensitive drugs, then will die when exposed to light at a particular frequency.
Photodynamic therapy destroys cancerous cells by using this fixed frequency light to activate photosensitizing drugs which have accumulated in body tissues. In photodynamic therapy, a photosensitizing drug is administered intravenously. Within a specific time frame (usually a matter of days), the drug selectively concentrates in diseased cells, while rapidly being eliminated from normal cells. The treated cancer cells are then exposed to a laser light chosen for its ability to activate the photosensitizing agent. The physician manipulating the laser light through a fiberoptic device. This laser light is delivered to the cancer site, (in the case of pleural mesothelioma). As the agent in the treated cells absorbs the light, an active form of oxygen destroys the surrounding cancer cells. The light exposure must be carefully timed, so that it occurs when most of the photosensitizing drug has left the healthy cells, but is still present in cancerous ones. The major side effect of photodynamic therapy is skin sensitivity. Patients undergoing this type of therapy are usually advised to avoid direct and even indirect sunlight for at least six or seven weeks. Other side effects may include eye sensitivity to light, vomiting, nausea, and a metallic taste in the mouth. These symptoms for mesothelioma cancer treatments may sometimes come as a result of the injection of the photosensitizing agent. |