Abstract
Immunoglobulin A vasculitis (IgAV), formerly called Henoch-Schönlein purpura, is an immune complex vasculitis that affects small vessels with dominant IgA deposits. Advanced cases progress to renal dysfunction, such as nephrotic syndrome and renal failure. We report the case of an 84-year-old Japanese woman with a squamous cell carcinoma (SCC) in the left maxillary gingiva who developed a bilateral purpuric rash of the lower limbs 33 days after surgery to treat SCC of the maxilla. IgAV was diagnosed based on the clinical symptoms and biopsy results. The patient received diaphenylsulfone and steroid therapy, which resulted in complete remission of the IgAV and renal dysfunction. After the treatments, neither the IgAV of the lower limbs nor the SCC of the maxilla recurred.
