Treatment with radioactive iodine ((131)I) may be necessary for thyroid cancer or for hyperthyroidism in patients with end-stage renal disease who require hemodialysis. Because (131)I is cleared mainly by the kidneys in patients with normal renal function, many issues arise in patients who require (131)I treatment but who are on hemodialysis. This paper presents a case report of a patient on dialysis who required treatment with (131)I for thyroid cancer. We describe a mathematical model, which suggests that the treatment dose of (131)I for a patient with thyroid cancer on hemodialysis would be approximately 13%-28% of a typical empiric dose of (131)I for a patient with normal renal function. Also, we present a comprehensive review and discussion of the literature on patients who are receiving hemodialysis who were treated with (131)I for either thyroid cancer or hyperthyroidism. Using a multidisciplinary approach and special precautions, (131)I therapy can be administered safely and effectively for patients with thyroid cancer or hyperthyroidism who are receiving hemodialysis.
In the absence of definitive studies relating radioiodine dose to outcomes, selection of a dose of radioiodine to treat metastatic thyroid carcinoma is problematic, and several approaches have been used. These include empiric fixed doses and doses used on dosimetric approaches specific for each patient. This paper is a review of the rationale and technique for dosimetrically-determined doses of radioiodine for the treatment of metastatic thyroid carcinoma. This review (1) discusses the alternatives for selection of a dose, (2) discusses the two major approaches for determining radioiodine doses dosimetrically, (3) briefly reviews several modifications of these approaches, (4) reviews the literature regarding the results, (5) discusses the side effects of these different approaches, and (6) concludes with recommendations for patient management and future research. This review does not address use of dosimetrically-determined doses of radioiodine for the initial ablation of thyroid tissue postoperatively.
A 96-hour infusion of VX-710 at 120 mg/m(2)/h plus doxorubicin 45 mg/m(2) has acceptable toxicity in patients with refractory malignancies. The safety and pharmacokinetics of VX-710 plus doxorubicin warrant efficacy trials in malignancies expressing P-gp and/or MRP1.
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