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OBJECTIVES: I. Evaluate the effects of 20 Gy of external-beam radiotherapy to 1 orbit vs. the untreated orbit at 3 and 6 months after therapy in patients with Graves' ophthalmopathy.
II. Evaluate whether 20 Gy of external-beam radiotherapy delivered to the second orbit 6 months later in the course of the disease produces effects of equal magnitude to those observed when the first orbit was treated.
III. Relate the magnitude of treatment effects to the time since onset of eye symptoms.
IV. Evaluate whether characteristics of radiation retinopathy are present 3 years after orbital radiotherapy.
PROTOCOL OUTLINE: The posterior region of 1 orbit is irradiated over 2 weeks with supervoltage equipment. The other orbit is treated 6 months later. The sequence of therapy is randomly assigned.
The untreated eye receives a simultaneous sham treatment during each radiotherapy session.
Patients are followed at 3, 6, 9, 12, and 36 months.
Allocation: Randomized, Primary Purpose: Treatment
Active, not recruiting
Office of Rare Diseases (ORD)
Published on BioPortfolio: 2010-07-15T17:00:00-0400
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A common form of hyperthyroidism with a diffuse hyperplastic GOITER. It is an autoimmune disorder that produces antibodies against the THYROID STIMULATING HORMONE RECEPTOR. These autoantibodies activate the TSH receptor, thereby stimulating the THYROID GLAND and hypersecretion of THYROID HORMONES. These autoantibodies can also affect the eyes (GRAVES OPHTHALMOPATHY) and the skin (Graves dermopathy).
An autoimmune disorder of the EYE, occurring in patients with Graves disease. Subtypes include congestive (inflammation of the orbital connective tissue), myopathic (swelling and dysfunction of the extraocular muscles), and mixed congestive-myopathic ophthalmopathy.
Immune-mediated inflammation of the PITUITARY GLAND often associated with other autoimmune diseases (e.g., HASHIMOTO DISEASE; GRAVES DISEASE; and ADDISON DISEASE).
Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.
The total amount of radiation absorbed by tissues as a result of radiotherapy.