. The American journal of roentgenology, radium therapy and nuclear medicine . rmined bymeans of the fluoroscope. Diverticula of the esophagus usually occurin the lower mediastinal region and can bedetermined by the use of the opaque meal. Hernia in this region is a rare abdominal viscera, usually the stom-ach or transverse colon, are occasionallyfound in the posterior mediastinum, havingpassed through the dilated esophagealopening in the diaphragm. The opaquemeal will also very readily determine thiscondition. Echinococcus cysts and hematomatararely occur in the mediastinum. The
. The American journal of roentgenology, radium therapy and nuclear medicine . rmined bymeans of the fluoroscope. Diverticula of the esophagus usually occurin the lower mediastinal region and can bedetermined by the use of the opaque meal. Hernia in this region is a rare abdominal viscera, usually the stom-ach or transverse colon, are occasionallyfound in the posterior mediastinum, havingpassed through the dilated esophagealopening in the diaphragm. The opaquemeal will also very readily determine thiscondition. Echinococcus cysts and hematomatararely occur in the mediastinum. Theymay, however, be seen at the bases of thelungs. The mediastinal region should always beexamined by the combined method; thefluoroscopic examination being checked upwith stereoscopic plates, which will alsoserve as permanent records. In making reports on roentgenologicalfindings, it is better to describe, as ac-curately and intelligently as possible, whatwe see, and then supplement these datawith a few remarks or suggestions as to theprobable conditions present. Only in ex-. FlG. 6. DlAPHRAGM.\TIC GaSTRIC HeRXIA. Showing bismuth in the stomach above the rightdiaphragm. The gas shadow beneath the left dia-phragm is transverse colon. Roentgen Differentiation of Cavities :eptional cases should an unequivocal diag-jiosis be made. I Many of the chest examinations areTiade for the purpose of revealing obscureconditions, the nature of which the clini-nan has not been able to determine, and its unreasonable to expect the roentgenolo-gist to arrive at a full diagnosis from hissxamination alone. But although one can-not differentiate a lymphadenoma from aEymphosarcoma, one can describe quiteiccurately the size, position and shape ofjthe mass, and what effect it has exertedupon the surrounding structures, such asI displacement of the viscera, or pressure onthe lungs or bronchi, with resultant atelec-tasis or pleural effusion; and when allthese data are weighed by the clinician inconjuncti
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