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THE RESPONSE of the bladder wall and intramural portion of the ureter to electrocoagulation is unpredictable. In 1921, when diathermic currents first became applicable for the destruction of bladder tumors, the late B. C. Corbus, Sr., and I coagulated the region of the ureteral orifice in a series of dogs. In most instances, a portion of the intramural ureter sloughed out leaving a patulous intravesical ureteral orifice. In a smaller number, the area underwent extreme fibrosis with subsequent contracture and stenosis of the ureteral orifice. In an extensive experience with open suprapubic operation for coagulation of bladder tumors, in both male and female, we found that about 75% of the tumors overlying a ureteral orifice could be deeply coagulated without subsequent scarring and narrowing of the orifice. In about a quarter of the patients who were followed carefully over the years, in whom tumor did not recur locally, subsequent narrowing
O'Conor VJ. Bilateral Stenosis of Ureteral Orifices: Complication of Transurethral Resection of the Prostate. JAMA. 1962;182(8):866–868. doi:10.1001/jama.1962.03050470044014
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