DOTATATE -Avid Bilateral Axilla and Subpectoral Lymphadenopathy Induced From COVID-19 mRNA Vaccination Visualized on PET/CT.

A 64-year-old woman with malignant carcinoid tumor of the ileum received right ileocolectomy 9 years ago. Series follow-up imaging studies including most recent 68Ga-DOTATATE PET/CT scan in June 2020 have been negative for disease. Current 68Ga-DOTATATE PET/CT scan showed new cluster of bilateral axillary and subpectoral lymphadenopathy with normal CT morphology, but with avid DOTATATE uptake. There was no other abnormal DOTATATE-avid lesion or suspicious CT image findings. The medical history revealed that the patient received 2 doses of COVID-19 (coronavirus disease 2019) mRNA vaccine at bilateral upper arm deltoid muscles at 21 and 42 days prior to the PET/CT examination, respectively.