Recurrent Pegfilgrastim-Associated Migratory Large Vessel Vasculitis in a Patient with Breast Cancer with Rare HLA Haplotype: A Case Report
1.1. Background: Granulocyte-Colony Stimulating Factor (G-CSF) rarely induces severe systemic vasculitis. However, diagnosing vasculitis can be challenging because clinical mani festations in the early phase are non-specific. We report a case of pegfilgrastim-associated vasculitis in a patient with rare Human Leukocyte Antigen (HLA) genotype and multifactorial disorder during breast cancer chemotherapy.