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. 2010 May;20(5):1251-3.
doi: 10.1007/s00330-010-1719-5. Epub 2010 Feb 26.

FDG uptake in axillary lymph nodes after vaccination against pandemic (H1N1)

Emmanouil Panagiotidis  1 , Demetrios Exarhos, Irene Housianakou, Apostolos Bournazos, Ioannis Datseris
Affiliations

FDG uptake in axillary lymph nodes after vaccination against pandemic (H1N1)

Emmanouil Panagiotidis et al. Eur Radiol. 2010 May.

Abstract

Objective: To alert the imaging community to potential false positive findings related to current immunization programmes against H1N1 influenza virus.

Methods: We reviewed 10 patients referred for positron emission tomography/computed tomography (PET/CT) who had undergone recent vaccination.

Results: All studies showed( 18)F-fluorodeoxyglucose (FDG) uptake in the draining axillary lymph nodes close to the vaccination site, while low-dose CT revealed lymph nodes ranged between 0.5 cm and 1.2 cm at the same site.

Conclusion: This potential pitfall in PET/CT should be borne in mind during current vaccination programmes.

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