Axillary lymphadenopathy on breast MRI: yellow fever vaccination induced
Presentation
BRCA 1 carrier, yearly MRI breast screening. Yellow fever vaccination 10 days prior to scan via injection in the right arm.
Patient Data
Loading images...

Dynamic scans with IV gadolinium show gross level 1, 2 and 3 right axillary lymphadenopathy with smaller left sided axillary lymphadenopathy. Breasts are normal.
Case Discussion
Yellow fever vaccine is a weakened live virus and is associated with systemic flu-like symptoms. Lymphadenopathy can occur. Follow-up ultrasound and biopsy of these lesions after 2 weeks showed reduced size of the nodes and "reactive" change on cytology. It is important to obtain a complete history or even talk with the patient when interpreting any radiological examination in order to avoid false positive results.