Deviation 2... The inferior turbinates tend to grow to fill the available space. Long standing septal deviations can cause the inferior turbinate to enlarge on the concave side of the deviation. Often, the concave side of the deviation seems more obstructed to the patient. This may be from an enlarged turbinate or from turbulent airflow on this side. Several methods are available to reduce the size of enlarged turbinates and increase the available breathing space. 1999 Peter Casano, M.D.