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I-123 uptake by mediastinal goiter after recombinant human thyroid-stimulating hormone administration
1Nuclear Medicine Service, James A. Haley Veterans' Hospital and University of South Florida College of Medicine, Tampa, Florida 33612, USA. dwight.achong@med.va.gov
Clinical Nuclear Medicine
|September 21, 2001
Abstract:
Radioiodine scintigraphy is useful to confirm the presence of mediastinal thyroid tissue. However, the degree of iodine avidity of mediastinal goiters varies. Recombinant human thyroid-stimulating hormone given to stimulate iodine uptake by thyroid remnants and thyroid cancer metastases can now replace thyroid hormone withdrawal scanning of selected patients who have well-differentiated thyroid carcinoma. A case of mediastinal goiter visualized with I-123 after the administration of recombinant human thyroid-stimulating hormone is reported.