RT Journal Article SR Electronic T1 Retained tooth in the nasal cavity: a rare cause of nasal congestion JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e226745 DO 10.1136/bcr-2018-226745 VO 12 IS 2 A1 Marie Louise Moeller A1 Jesper Bille A1 Milos Fuglsang YR 2019 UL http://casereports.bmj.com/content/12/2/e226745.abstract AB A 59-year-old man presented with unilateral nasal congestion and discharge. Clinical examination revealed a mass in the floor of the nasal cavity. Sinus CT indicated a retained tooth or a dermoid cyst. It was removed by endoscopic surgery. Histology confirmed the diagnosis of a retained tooth. At follow-up, the patient reported no nasal symptoms. A retained nasal tooth is rare, and the symptoms are variable. It can resemble other diseases such as chronic rhinosinusitis. Surgical removal is recommended to confirm the diagnosis and eliminate symptoms.