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Technetium-99m tetrofosmin uptake in insular thyroid carcinoma. A comparison with iodine-131
Berna Degirmenci1, Aysel Aydin, Abdurrahman Comlekci
1Department of Nuclear Medicine, Dokuz Eylul University, School of Medicine, Inciralti, Izmir, Turkey. berna.degirmenci@deu.edu.tr
Abstract:
The authors describe a 42-year-old man with insular thyroid carcinoma. In this patient, iodine-131 (I-131) and technetium-99m (Tc-99m) tetrofosmin imaging were performed to investigate residual thyroid tissue and metastatic foci of tumor. Both I-131 and Tc-99m tetrofosmin images showed metastatic foci, but Tc-99m tetrofosmin imaging revealed the lesions better than did the I-131 scan. Tc-99m tetrofosmin imaging does not require withholding of thyroid hormone suppression and can be used for follow-up evaluation of patients with insular thyroid carcinoma.