Wong W, Saito T, Ogawa H
J Urol. 1975 Nov;114(5):746-51. doi: 10.1016/s0022-5347(17)67133-7.
A method of radiologic visualization of the male urethra especially for detecting prostatic carcinoma is reported. This method is called double contrast retrograde urethrocystography and is similar to that of Flocks in combining air cystography and retrograde urethrography but it differs in the manner of making the exposure. In our method the exposure is made with the patient in an exaggerated Trendelenburgs position to allow the contrast medium injected into the bladder to accumulate at the dome. Thus, in the urethrocystogram obtained by this method, the bladder neck and the prostatic urethra immediately adjacent to it are always clearly visualized unlike that obtained by conventional retrograde urethrography, evacuation cystourethrography and sometimes even the method of Flocks, in which these regions are prone to be covered and masked by the contrast medium injected and accumulated in the bladder. Therefore, with our method the radiological detection and differentiation of the malignant lesion involving these regions are more accurate and definite. From our clinical experiences the mode of compression and displacement caused by benign prostatic hypertrophy is continuous and regular, while that caused by prostatic carcinoma is interrupted, irregular and with moth-eaten and granular defects. Four cases are reported.
本文报道了一种用于男性尿道放射学可视化的方法，尤其适用于检测前列腺癌。该方法称为双重对比逆行尿道膀胱造影术，它与弗洛克氏法类似，都是将气囊造影术和逆行尿道造影术相结合，但在曝光方式上有所不同。在我们的方法中，患者处于极度头低脚高位进行曝光，以使注入膀胱的造影剂积聚在膀胱顶部。因此，通过这种方法获得的尿道膀胱造影片中，膀胱颈及其紧邻的前列腺尿道总是能清晰显示，这与传统逆行尿道造影术、排泄性膀胱尿道造影术，甚至有时与弗洛克氏法所获得的影像不同，在那些方法中，这些区域容易被注入并积聚在膀胱内的造影剂覆盖和遮挡。所以，采用我们的方法，对涉及这些区域的恶性病变进行放射学检测和鉴别会更加准确和明确。根据我们的临床经验，良性前列腺增生所引起的压迫和移位模式是连续且规则的，而前列腺癌所引起的则是间断、不规则的，并有虫蚀状和颗粒状缺损。本文报告了4例病例。
