Diagnosis of foreign body in the nasal cavity may be difficult because it has a wide variety of presentations. Concha bullosa is defined as the pneumatization of the middle concha in various degrees. A 43-year-old female patient was admitted to our clinic with the complaint of breathing difficulty through her right nostril which had been going on for the last year. She had had some medical treatments previously in some different medical centers, there wasn't purulent discharge with unpleasant odour, bleeding and halitosis in the nose and there wasn't a history of a blow to the nose or a history of previous facial, nasal or dental surgery. In the computed tomography there was an image resembling concha bullosa. Transnasal endoscopic approach was used, under general anesthesia, in the patient, whose physical examination results, laboratory findings and allergy test results were normal. Endoscopic sinus surgery was performed including polypectomy, right uncinektomy and the foreign body was removed from the middle meatus using a forceps. No complications were observed in the follow-up control one month later.