Postoperative Maxillary Cyst with Patent Lateral Nasal Window

Abstract

Four patients with postoperative maxillary cyst and patent lateral nasal window were examined fiberscopically and radiologically. The window of two patients remained widely open (more than 4.2mm in diameter), but that of other two had a narrow opening less than 4.2mm. Three of the 4 patients had a recurrence of maxillary cyst 3 to 5 years after the first surgery to remove the cyst.
Fiberscopic examination revealed a patent window in all cases, but 3 windows were shown to be closed by radiological examination.