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editorial

. 2021 Dec 20;49(3):791–795. doi: 10.1007/s00259-021-05652-1

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© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021

This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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Fig. 4 — [18F]FDG PET/CT images before (A) and after (B) COVID-19 vaccination in a multi-refractory diffuse large B-cell lymphoma (DLBCL) patient. She was treated with immunotherapy, and PET/CT images obtained after 5 cycles showed a disease progression (A). The treatment was stopped immediately, and she underwent a biopsy which confirmed DLBCL. About 1 month after, the patient underwent a new [18F]FDG PET/CT for restaging (B). Unexpectedly, previously reported lesions were no longer visible on either PET or CT images. Between the biopsy and the last PET/CT, the patient received the COVID-19 vaccination.