[Parotid involvement in Churg-Strauss syndrome]

Introduction: Churg-Strauss syndrome is a rare systemic vascularitis. This disease causes eosinophilic tissue infiltration. The most frequent manifestations are cortico-dependent asthma, mono- or polyneuropathy, paranasal sinus polyposis, and digestive and renal dysfunction. Salivary glands are very rarely involved.

Observation: We describe a case of CSS in a patient presenting with bilateral parotid swelling. The morphological study of salivary glands revealed an unusual thickening of the salivary duct walls.

Discussion: Salivary gland involvement in Churg and Strauss syndrome can be difficult to demonstrate histologically; it does not usually present in the clinical foreground of the disease, and can be a source of misdiagnosis. The biopsy should be performed in the symptomatic gland, away from any previous corticoid treatment.