Abstract
A 23-year-old male had a nasopalatine cyst, which caused 6×6×4cm defect in the maxillary bone and reached the oral vestibule and the floor of the nasal cavity. The cyst was completely removed, ` and 2-directional drainage routes for exudative fluid were made by mucosal resection in the floor of the nasal cavity and by opening of the left maxillary sinus. Postoperatively, the bone defect space filled up gradually with granulation tissue.A review of the operative methods of treating nasopalatine cysts and our experience in this case lead us to stress the importance of multiple directional drainage, especially if there is a large bone defect space, after removal of the cyst. For that purpose transmaxillary-sinus drainage is useful.
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