The patient was a 28-year-old housewife who had a swelling and pain on the left cheek for 14 days. Dental examination showed a decayed left upper third molar and pain on the left upper teeth to percussion. It was observed that the left inferior turbinate was pushed toward the nasal septum and the nasal floor superiorly.
X-ray films in intraoral technique revealed resorption of the roots of the left upper teeth. from lateral incisor to the second molar. A postoperative cyst in the left maxillary sinus was recognized in rhinological X-ray examination.
The patient was successfully treated by a radical operation on the paranasal sinus, extraction of the teeth 4-7 and alveoplasty.