Nasolacrimal Duct Obstruction on (131)I SPECT/CT: Atypical False-positive Paranasal Radioiodine Uptake as a Complication of Single-dose RAI Treatment.


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Filizoğlu N., Öksüzoğlu K., Özgüven S., Buğdaycı O., Erdil T. Y.

Molecular imaging and radionuclide therapy, cilt.31, sa.3, ss.234-236, 2022 (ESCI) identifier identifier identifier

Özet

Nasolacrimal duct obstruction (NLDO) is a rare complication after radioiodine therapy and may cause false positive I-131 uptake at the point of obstruction in I-131 whole body scan. Here, we report a 59-year-old female patient with papillary thyroid cancer treated with total thyroidectomy followed by I-131 therapy. I-131 whole body scan revealed focal uptake in the head. Single photon emission computed tomography/computed tomography (CT) showed focal uptake at the right proximal nasolacrimal duct. The ophthalmologic examination and the diagnostic maxillofacial CT confirmed the diagnosis of NLDO.