Studies on the lateral neck radiograph.

Abstract

1. The appearance of certain areas in the lateral radiographs of the neck was studied in 100 randomly selected cases in order to establish their normal variations and aid in the recognition of pathological deviations. 2. The pre-epiglottic space was found to be a fat-filled radiolucent zone. Invasion of this space disturbed and opacified this homogeneous fatty radiolucency. The size and shape of the space did not appear of probable clinical significance. 3. The epiglottico-ventricular angle is usually clearly and sharply defined. In the absence of described normal variations, obliteration of this angle implies a soft tissue swelling in the region of the anterior commissure. 4. Enlarged nodes or other masses in the submaxillary region may be demonstrated on the lateral radiographs of the neck by a downward bulge of the margin of the waterdensity shadow normally seen below the mandible. Criteria for the extent of downward bulging in normal individuals are established and presented. 5. Dissociation of the el...