ABSTRACT
Abnormal elevation of the diaphragm on chest X-ray is a sign of phrenic or juxtaphrenic disease (Fig. 2). Unilateral elevation of the diaphragm may be due to a variety of causes, most of which can be diagnosed by US (Table 2). On chest radiographs, the normal right dome of the diaphragm is at the level of the anterior end of the sixth rib. The normal left dome of the diaphragm is about half a rib interspace lower. However, a raised hemidiaphragm is a common normal variant.
