膀胱頚部疾患における膀胱排尿筋のレ線学的ならびに組織学的研究

概要

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Soft-tissue shadow outline of the bladder can be seen in some cases of bladder outlet obstruction. An attempt has been made to determine the significance of the soft-tissue shadow by correlating cystogram with histological findings of the bladder detrusor muscle not only in experimental animals but in clinical cases. Firstly, the soft-tissue shadow could be demonstrated in some cases of the bladder neck obstruction by means of excretory cystogram, retrograde cystourethrogram and double contrast cystogram, the last one being proved to be the best method to detect the soft-tissue Shadow. Secondly, the finding of the soft-tissue shadow appeared to betray the existence of bladder neck obstruction during the compensatory phase of the bladder detrusor muscle, while in the decompensatory phase soft-tissue shadow could not be demonstrated in any cases of bladder neck obstruction. Thirdly, histological studies clarified that bladder wall showed a hypertrophy of the detrusor muscle and a proliferation of the stromal tissues in the positive case of soft-tissue shadow. In conclusion, it is not so difficult to find the urinary tract obstruction in advanced cases. However, compensatory detrusor hypertrophy demonstrates soft-tissue shadow by the roentgenography, which serves to diagnose early bladder neck obstruction without any subjective complaint or objective disturbance.
社団法人日本泌尿器科学会の論文