The crucial problem in the treatment of Cushing's syndrome is the differentiation of tumor from nontumorous hyperfunction of the adrenal cortex. The usefulness of the roentgen examination in the detection of adrenocortical tumor has been noted on several occasions. Special emphasis has been laid on perirenal or presacral gas insufflation. However, most reports are concerned with the principles involved and do not include statistical documentation of the claims made.1-7
This report is concerned with an evaluation of the efficacy of the roentgenogram in making a diagnosis of the presence or absence of tumor based on 57 instances of Cushing's syndrome observed personally by the authors at The Mount Sinai Hospital. The detailed clinical manifestations of these patients are being reported in separate publications.8,9
In the patients in this series, the roentgen examination in sequential order included a flat plate, intravenous pyelography, and presacral or perirenal gas insufflation,
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