A case of sialodochitis fibrinosa affecting both parotid glands

Sialodochitis fibrinosa is a rare disease that is characterized by paroxysmal, intermittent swelling of the salivary gland due to obstruction of the duct system by fibrinous plugs.This paper reports a case of sialodochitis fibrinosa affecting both parotid glands. The patient was a 52-year-old woman with recurrent bilateral swelling of the parotid glands. Histopathological examination of fibrinous plugs extruded from the parotid duct revealed numerous eosinophils, and blood examination showed an increased IgE level. The segmental dilatation of the parotid ducts was confirmed on radiography with contrast media. Symptoms wererelieved by administration of antihistamines and irrigation of the parotid glands.