Abstract
Odontoma is one of the most common benign odontogenic tumor but rarely occurs in the wall of the maxillary sinus. We report a rare case of an isolated odontoma, complex type which was located in the medial wall of the maxillary sinus.
A 64-year-old man visited a dental clinic because of pain and swelling of his left-side maxillary gingiva. Radiographic examination showed a radiopaque mass in the left maxillary sinus. He was referred to our department for further investigation of the lesion in the left maxillary sinus. Computed tomography revealed thickening of the maxillary sinus mucosa surrounding a tooth-like structure in the left medial wall of the maxillary sinus and soft tissue density in the left maxillary sinus containing the impacted first and second molars.
He was given a provisional diagnosis of odontoma in the maxillary sinus and infected dentigerous cyst associated with impacted first and second molars. He underwent surgical removal of the tooth-like structure in the maxillary sinus, followed by creation of a nasoantral window and extraction of the impacted first and second molars, followed by surgical enucleation of the cyst under general anesthesia. Histopathological examination of the tooth-like structure confirmed the diagnosis of odontoma, complex type. No evidence of postoperative recurrence of the left maxillary sinus has been observed.
