Radiographic studies of upper airway obstruction with cor pulmonale in a patient with pycnodysostosis

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The purpose of this article is to present radiographic aspects of obstructive anatomical alterations of the upper airway before and during sleep in a 4 1/2-year-old boy affected with pycnodysostosis. The striking length of the uvula and the inspiration-exspiration changes in its position was an important factor in the obstruction of the upper airway. For better and earlier understanding of the actual mechanism of upper airway obstruction, the radiological data should be obtained during the same circumstances that the patient is experiencing his maximum discomfort.