Accumulation of 131Iodine in the nasolacrimal sac/duct after radioiodine therapy for papillary thyroid cancer
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Published:2023-02-15
Issue:3
Volume:73
Page:713-714
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ISSN:0030-9982
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Container-title:Journal of the Pakistan Medical Association
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language:
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Short-container-title:J Pak Med Assoc
Author:
Usmani Sharjeel,Jain Anjali,Al Riyami Khulood,Abubakar Sofiullah
Abstract
SPECT/CT is a powerful tool for assessing unexpected concentrations of radioiodine resulting from benign uptake in organs with sodium-iodide symporter (NIS) expression. We report a case of accumulation of 131Iodine in the nasolacrimal sac/duct after radioiodine therapy for papillary thyroid cancer. A whole-body scan was taken 3 days after the administration of 5.5 GBq of 131Iodine. SPECT/CT images localized the focal tracer uptake in the nasolacrimal sac/duct likely due to nasolacrimal duct obstruction secondary to prior radioiodine or iodine therapies. Hybrid SPECT/CT allows precise anatomical localization and help differentiate benign mimics of disease, which can alter patient management.
Keywords: 131Iodine SPECT-CT, thyroid cancer, papillary thyroid cancer, nasolacrimal duct obstruction
Publisher
Pakistan Medical Association