Dear editor, we would like to share ideas on the publication “Temporal metabolic response to mRNA COVID-19 vaccinations in oncology patients [1].” Advani et al. concluded that “Consideration should be given to performing FDG PET at least 2 weeks after the COVID-19 vaccine. [1].” This report can confirm that both immunological and metabolic responses occurred at lymph node following COVID-19 mRNA vaccination. Waiting might be a good practice. However, the problem might still exist after 2-week period of waiting and it is sometimes not possible to have a long waiting. To avoid interference in medical imaging for cancerous case, in a recent report, it is recommended for “administering the vaccine in the arm contralateral to a unilateral cancer [2].”
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References
- 1.Advani P, Chumsri S, Pai T, Li Z, Sharma A, Parent E. Temporal metabolic response to mRNA COVID-19 vaccinations in oncology patients. Ann Nucl Med. 2021 doi: 10.1007/s12149-021-01675-8. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.McIntosh LLJ, Bankier AA, Vijayaraghavan GR, Licho R, Rosen MP. COVID-19 vaccination-related uptake on FDG PET/CT: an emerging dilemma and suggestions for management. AJR Am J Roentgenol. 2021 doi: 10.2214/AJR.21.25728. [DOI] [PubMed] [Google Scholar]