[Eosinophilic adenoma of the nose and ethmoid bone simulating a malignant tumor].

A 82-year old woman patient was first diagnosed to have a dacryocystitis and was treated at the Department of Ophthalmology. Clinical examination and x-ray of the paranasal sinuses including tomographs led to the suspicion of a malignant, infiltratively growing tumour in the region of the left cheek and of the left ethmoidal cells. After endonasal removal of the tumour that obstructed the left nasal cavity and ethmoidal cells, histological diagnosis revealed an eosinophilic adenoma. Dacryocystitis had been caused secondarily by the impairment of lacrymal flow. Now, one year later, the patient is free from any recurrence and clinical or subjective signs and symptoms.