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In considering prostatic hypertrophy and the consequent urinary obstruction, it is important for us to know the amount of intravesical hypertrophy. It is often the enlargement of the part around the vesical neck projecting into the bladder in a snoutlike mass, rather than the lateral lobes, that causes the urinary obstruction. Rectal palpation usually affords little, if any, information as to the extent of this intravesical hypertrophy. This can be determined, of course, by cystoscopic examinations, but such procedures are not always feasible or expedient, owing to the age and feeble condition of the patients we are called on to attend.
We have recently found that air cystograms with the patient lying face downward clearly demonstrate these intravesical snouts, median lobe enlargements, and similar conditions. While air and oxygen have been used in demonstrating the size of tumors of the bladder, sacculations, and the like, we have not been able
BALLENGER EG, ELDER OF, LAKE WF. THE DEMONSTRATION OF PROSTATIC ENLARGEMENT BY THE ROENTGEN RAY: AFTER DISTENDING THE BLADDER WITH AIR: PRELIMINARY REPORT. JAMA. 1924;82(13):1023–1024. doi:10.1001/jama.1924.02650390013005
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