Imaging Findings Related to the Valsalva Maneuver in Head and Neck Radiology. 
Forced exhalation against a closed glottis, known as the Valsalva maneuver, is an important clinical diagnostic and therapeutic tool due to its physiologic effects.  Several unique conditions and anatomic changes can occur with repetitive or acute changes in pressure from the Valsalva maneuver.  We will discuss and review various pertinent head and neck imaging cases with findings resulting from induced pressure gradients, including the Valsalva maneuver.  Additionally, we will demonstrate the diagnostic utility of the Valsalva maneuver in head and neck radiology.