Imaging should be performed prior to vaccination or postponed for at least 4–6 weeks after COVID-19 vaccination unless a patient has an urgent clinical indication.
1 When imaging is required after vaccination, institutions should document COVID-19 vaccination information, including date(s) of vaccination(s), injection site(s) [left or right, arm or thigh], and type of vaccine in a patient questionnaire that is readily available to radiologists.
1 , 4 Recognition of supraclavicular lymphadenopathy as a self-limiting immune reaction in the setting of recent ipsilateral arm vaccination against COVID-19 may reassure patients and avoid unnecessary aspiration or biopsy of lymph nodes. More conservative approaches, such as observation for at least 6 weeks until resolution or short-term follow-up with ultrasound to ensure resolution of lymph nodes, are recommended rather than immediate biopsy of the nodes in patients with axillary and/or supraclavicular lymphadenopathy after recent ipsilateral COVID-19 vaccination.