A 58-year-old woman with newly diagnosed metastatic duodenal adenocarcinoma presented at the emergency department of Brigham and Women’s Hospital (Boston, MA, USA) in June, 2021, with worsening right-sided neck and jaw pain and difficulty swallowing. 9 days beforehand, the patient had started chemotherapy with FOLFOXIRI (fluorouracil continuous infusion 1600 mg/m2/day for 46 h, folinic acid 200 mg/m2, irinotecan 165 mg/m2, and oxaliplatin 85 mg/m2) and bevacizumab (5 mg/kg). 7 days prior to presentation, the patient was given pegfilgrastim (pegylated granulocyte colony-stimulating factor [G-CSF], 6 mg) for primary prevention of chemotherapy-induced neutropenia.
[Clinical Picture] G-CSF-induced carotid inflammation
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