Abstract
The treatment of a huge cystic lesion in the upper jaw involving the respiratory cavities may result challenging. A traditional oral approach entails patient discomfort and may have negative aesthetic implications. This treatment, particularly in case of enucleation not preceded by marsupialization for volumetric reduction of the lesion, may cause irreversible damage to important anatomical structures and the collapse of the bone architecture. The purpose of this case report is to show the benefits of an endoscopic trans-nasal approach for the definitive treatment of such a clinical situation. The surgical technique aimed to remove part of the cystic wall and to open the inner compartment of the lesion to the nasal cavity after the resection of the anterior edge of the inferior turbinate and the lateral wall of the inferior nasal meatus. After a follow-up period of 18 months, without any problem or discomfort for the patient, the cyst appeared radiologically healed without the loss of any lesion-associated tooth. The bone nasal cavity, the maxillary sinus and the anterior alveolar process architecture, noticeably modified by the expansive enlargement of the cyst, resulted completely restored with a complete recover of the respiratory and oral functions.
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