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Plaque radiotherapy is a common treatment for uveal melanoma. However, local failure has been reported in up to 20% of patients. We use intraoperative ultrasonography at plaque insertion and removal to evaluate plaque movement as a potential factor in local failure.
Episcleral plaque radiotherapy is a common treatment for uveal melanoma and results in local tumor control in most cases. However, local failure has been reported in a substantial proportion of patients. Since local failure greatly increases the risk of metastatic death, identifying and correcting the causes of local treatment failure are of paramount importance. Poor plaque localization is an important contributing factor to local failure. With the aid of intraoperative ultrasonography, most malpositioned plaques can be identified and readjusted at the time of plaque insertion. However, little is known about plaque movement during the 4-5 days of brachytherapy, which could also contribute to local failure. To address this question, we perform intraoperative B-scan ultrasonography at the time of iodine-125 radioactive plaque insertion and removal in uveal melanoma patients.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Washington University in St. Louis School of Medicine
Active, not recruiting
Barnes Retina Institute
Published on BioPortfolio: 2014-08-27T03:39:09-0400
The purpose of this study is to find out what effects, good and/or bad, intermittent dosing of the drug Selumetinib will have on subjects with uveal melanoma. Selumetinib is a drug that bl...
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Uveal melanoma is the most common primary intraocular malignancy, which could metastasize at an early stage of the disease and associated with poor prognoses. Liver, small bowel, stomach, and colon ar...
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An unpigmented malignant melanoma. It is an anaplastic melanoma consisting of cells derived from melanoblasts but not forming melanin. (Dorland, 27th ed; Stedman, 25th ed)
Experimentally induced tumor that produces MELANIN in animals to provide a model for studying human MELANOMA.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
A ring of tissue extending from the scleral spur to the ora serrata of the retina. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.
A cellular subtype of malignant melanoma. It is a pigmented lesion composed of melanocytes occurring on sun-exposed skin, usually the face and neck. The melanocytes are commonly multinucleated with a "starburst" appearance. It is considered by many to be the in situ phase of lentigo maligna melanoma.
Melanoma is a highly malignant tumor of melanin-forming cells (melanocytes) There are most commonly found in the skin (resulting from sunlight exposure), but also in the eyes and mucous membranes. Metastasis to other regions of the body is also common....
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