Abstract
The displacement method of diagnosing and treating diseases of the sinuses, as described by Dr. Proetz of St. Louis, was begun at the Massachusetts Eye and Ear Infirmary in September, 1931, at the request of Dr. Mosher and through the cooperation of Dr. Macmillan and the roentgenologic department. A total of ninety-three patients were studied. The preliminary diagnoses are given in table 1. In fifty-six cases routine roentgen examination showed a thickened lining membrane, and in sixteen there was also retained secretion or pus. Thirteen patients with atrophic rhinitis were treated, and in eight cases preliminary roentgenograms showed no pathologic condition of the sinuses. The displacement principle, as is well known, depends on the elasticity of air contained in the sinus cavities, small portions of which can be displaced by suction applied to the nostril and replaced by droplets of any fluid in contact with the ostium
Published Version
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