Proton therapy breast cancer case history

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Invasive lobular carcinoma Triple negative breast cancer Proton therapy is able to treat patients with early stage breast cancer who undergo breast conserving surgery with minimal or no tissue rearrangement with proton partial breast irradiation on trial. We also treat patients who require radiation after mastectomy on a trial comparing proton post mastectomy radiation therapy to traditional photon post mastectomy radiation therapy. Additionally, we treat select patients with breast cancer who previously received radiation therapy close to where we need to target. Pencil beam scanning proton therapy delivers a single, narrow proton beam that is magnetically swept across the tumor, depositing radiation like a painter's brush, without the need to construct beam-shaping devices. The advantage lies in the beam's capacity to approach the tumor from multiple directions, creating a "U" shape around critical structures and minimizing the dose to them during treatment. BENEFITS By reducing both high and low doses of radiation to non-target tissues, as compared to intensity modulated radiation therapy IMRT or 3-D three-dimensional radiation planning, protons offer the potential of reduced long-term functional and cosmetic side effects from radiation treatments for breast cancer.
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Targeting Strategies for Multifunctional Nanoparticles in Cancer Imaging and Therapy

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Journal of Cancer Research and Therapeutics : Table of Contents

Description[ edit ] In a typical treatment plan for proton therapy, the spread out Bragg peak SOBP, dashed blue line is the therapeutic radiation distribution. The depth-dose plot of an X-ray beam red line is provided for comparison. The pink area represents additional doses of X-ray radiotherapy—which can damage normal tissues and cause secondary cancers, especially of the skin. In proton therapy, medical personnel use a particle accelerator to target a tumor with a beam of protons. Cancerous cells are particularly vulnerable to attacks on DNA because of their high rate of division and their reduced abilities to repair DNA damage.
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Prostate Cancer

After lumpectomy, treatment may include: Breast-conserving therapy, which consists of lumpectomy followed by radiation therapy, is equally effective against breast cancer as mastectomy removal of the entire breast for many patients. For advanced breast cancer or breast cancer that has spread to the lymph nodes, radiation is often recommended even after mastectomy. In addition, for large tumors or tumors that have spread to the lymph nodes, the radiation field is extended to include the breast or chest wall and the lymph nodes regions in the axilla underarm region , supraclavicular region along the collar bone , and internal mammary chain along the sternum. Radiation therapy decreases the chance of the cancer coming back in the breast or chest wall and lymph node regions and, in many cases, also improves overall survival.
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Abstract A year-old man with multiple liver metastasis of esophageal cancer underwent four courses of chemotherapy. After four courses of chemotherapy, positron emission tomography showed progressive disease. Because it was difficult to control the cancer only by chemotherapy, we performed proton beam therapy PBT combined with chemotherapy. This resulted in a complete response as shown by positron emission tomography. In our experience, PBT exerted a curative effect on liver metastases of esophageal cancer.
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