Covid-19 has changed the practice of present-day medicine. Social-distancing, hand-sanitation and use of face-mask are important measures taken against its spread. Post-thyroidectomy whole-body diagnostic I-131 scan is an important preliminary investigation for risk stratification and further management in thyroid cancer. False positive findings on diagnostic scan are not uncommon and must be evaluated to avoid unnecessary work-up and treatment. Clinical and biochemical correlation with adjunct SPCET/CT imaging may differentiate true from false-positive lesions. We report a case of unusual false positive linear neck tracer on whole-body diagnostic I-131 scan due to the use of an I-131 contaminated face mask.
Betti F, Antonacci L, Volterrani D. Artifact from 131I-Contaminated Mask in Post radioiodine Therapy Scintigraphy. J Nucl Med Technol. 2021; 49(4):356-7.
Greenler DP, Klein HA. The scope of false-positive iodine-131 images for thyroid carcinoma. Clin Nucl Med. 1989; 14(2):111-7.
Abdel-Dayem HM, Halker K, El Sayed M. The radioactive wig in iodine-131 whole body imaging. Clin Nucl Med. 1984; 9(8):454-5.
Gritters LS, Wissing J, Gross MD, Shapiro B. Extensive salivary contamination due to concurrent use of chewing tobacco during I-131 radioablative therapy. Clin Nucl Med. 1993; 18(2):115-7.
Chowdhary AW, Kavanal AJ, Sood A, Prashar S, Upadhyay R, Bhattacharya A, et al. Posttraumatic Scab on I-131 Whole-Body Scan-A False-Positive Finding. Clin Nucl Med. 2021; 46(6):512-4.
Chudgar AV, Shah JC. Pictorial Review of False-Positive Results on Radioiodine Scintigrams of Patients with Differentiated Thyroid Cancer. Radiographics. 2017; 37 (1):298-315.
Spanu A, Solinas ME, Chessa F, Sanna D, Nuvoli S, Madeddu G. 131I SPECT/CT in the follow-up of differentiated thyroid carcinoma: incremental value versus planar imaging. J Nucl Med. 2009; 50(2):184-90.
Anwariya, A., Aggarwal, P., Sood, A., Tigapuram, N., & Prashar, S. (2023). False positive finding on whole-body iodine-131 scan secondary to contaminated face mask: an uncommon peril in current COVID pandemic. Asia Oceania Journal of Nuclear Medicine and Biology, 11(1), 82-84. doi: 10.22038/aojnmb.2022.63815.1449
MLA
Anupriya Anwariya; Piyush Aggarwal; Ashwani Sood; Nitheesh Tigapuram; Sarika Prashar. "False positive finding on whole-body iodine-131 scan secondary to contaminated face mask: an uncommon peril in current COVID pandemic". Asia Oceania Journal of Nuclear Medicine and Biology, 11, 1, 2023, 82-84. doi: 10.22038/aojnmb.2022.63815.1449
HARVARD
Anwariya, A., Aggarwal, P., Sood, A., Tigapuram, N., Prashar, S. (2023). 'False positive finding on whole-body iodine-131 scan secondary to contaminated face mask: an uncommon peril in current COVID pandemic', Asia Oceania Journal of Nuclear Medicine and Biology, 11(1), pp. 82-84. doi: 10.22038/aojnmb.2022.63815.1449
VANCOUVER
Anwariya, A., Aggarwal, P., Sood, A., Tigapuram, N., Prashar, S. False positive finding on whole-body iodine-131 scan secondary to contaminated face mask: an uncommon peril in current COVID pandemic. Asia Oceania Journal of Nuclear Medicine and Biology, 2023; 11(1): 82-84. doi: 10.22038/aojnmb.2022.63815.1449
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