Concha Bullosa is an air pocket in the middle turbinate. Turbinates are the part of your nose that warms and humidifies the air you breathe. Concha bullosa is a very common anatomical deviation. While it does not necessarily predispose you to sinus problems, persons with enlarged turbinates and concha bullosa may have a blockage which prevents their sinuses from draining properly resulting in frequent sinus infections. This condition may require surgical intervention. This surgery is generally done in a same day setting using an endoscope. Some studies have also linked concha bullosa with a deviated septum.
American Journal of Neuroradiology. The Incidence of Concha Bullosa and it's Relationship to Nasal Septal Deviation and Paranasal Sinus Disease. Accessed: August 12, 2010 from http://www.ajnr.org/cgi/content/abstract/25/9/1613