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Salivary gland duct obstruction after radioiodine therapy: a case report

Farkhanda Gillani, Muhammad Babar Imran, Muhammad Naeem.

Abstract
Background: Radioiodine therapy has long been used in the treatment of hyperthyroid patients. Salivary complications secondary
to radioactive iodine (RAI) treatment are well documented, there is little in the literature addressing salivary gland duct
obstruction. We present a rare case of salivary gland duct obstruction developed 2 months after RAI treatment.

Case Presentation: We describe a 50-year-old male, treated with RAI for hyperthyroidism. He developed pain and swelling
in the left submandibular region, 2 months after receiving RAI treatment (25 mCi). His salivary gland scintigraphy was done
after injecting 370 MBq (15 mCi) of Tc99m pertechnetate in supine position. It revealed retention of radiotracer in the left
submandibular gland with no drainage through the duct system, even on giving lemon stimulus, favoring submandibular gland
duct obstruction.

Conclusion: We report this rare complication of submandibular gland duct injury occurring after RAI therapy. The occurrence of
this complication even after low dose of radioiodine administration may be listed in gamut. All necessary measures must be taken
to reduce such potential complications.

Key words: Radioactive iodine treatment, Submandibular gland, salivary gland scintigraphy, case report


 



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ISSN : 2520-4998