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A rare case of maxillary sinus angiolymphoid hyperplasia with eosinophilia Objective: The differential diagnosis of an unilateral maxillary sinus mass is a common challenge for the ENT surgeon.
Methodology: We present a case of a 52-year-old Caucasian man presented at our ENT department for evaluation of a suspected left maxillary sinus neoplasm in the CT and MRI scans. The mass was surgically removed with an exclusive endoscopic endonasal approach; histological findings and clinical reports indicated angiolymphoid hyperplasia with eosinophilia (ALHE).
Results: Angiolymphoid hyperplasia with eosinophilia is an extremely rare disease of the paranasal sinuses and can simulate malignant disease.
Conclusions: The endoscopic oncologic approach allowed obtaining a biopsy and, subsequently, a frozen section, followed by resection of the lesion with minimal morbidity for the patient, thus avoiding an open approach. The patient does not have recurrences after two years.