Abstract
We report a case of dentigerous cyst in the maxillary sinus with epistaxis. A 55-year-old man complained of recurrent epistaxis on the right side. He also had untreated hypertension. Orthopantomography and computed tomography showed an inverted tooth and dentigerous cyst in the right maxillary sinus. We considered that the cyst was the cause of the epistaxis. Removal of the cyst and extraction of the tooth via the vestibulum oris were performed under general anesthesia. The cyst wall was egg shell-like and bled easily. There were no further episodes of epistaxis after surgery. To the best of our knowledge, no case of dentigerous cyst in the maxillary sinus with epistaxis has previously been reported.
