Eosinophilic granulomatous with polyangiitis complicated by swelling of the oral cavity floor and cervical soft tissue as initial manifestation mimicking IgG4-related disease: A case report.

Eosinophilic granulomatous polyangiitis is a systemic vasculitis associated with bronchial asthma and eosinophilic sinusitis. Here, we describe an unusual presentation of eosinophilic granulomatous polyangiitis that initially manifested as swelling of the oral cavity floor and cervical soft tissue. A 58 year-old Japanese man was diagnosed with bronchial asthma during childhood but did not receive regular medication.