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Flank pain, ultrasound showed hydronephrosis, CT scan shows renal pelvis. How can both ureters be blocked?

I had a CT ( no contrast) as a follow up to an ultrasound to help diagnose flank pain. The ultrasound noted possible bilateral hydronephrosis . I have no blood in my urine and urinalysis did not not show infection etc. The CT showed bilateral prominent renal pelvis but no kidney stones . Liver spleen etc are all normal.Currently, the back pain in the kidney area is worsening. I am going back for ANOTHER CT on Thursday, this time with contrast. Q:How on earth can both ureters be blocked/kinked ? I can understand one but both? Q: If not the ureters, what else could cause kidney pain ( aching more like) on both side with dilation of the renal pevlis ( bilateral) ?
Asked On : Thu, 11 Oct 2012
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Pulmonologist 's  Response
Thanks for your quey
both the ureters can be blocked only when there is a pathology at their junctional point like in the bladder or urethra or prostate in male. If there is a bladder tumor or urethral stricture or benign hypertrophy of prostate they can lead to bilateral hydronephrosis and bilateral changes.
Kidney pain may be caused by renal stone itself even in the absence of urteral patholgy. Renal cell carcinoma may also cause pain. Bilateral hydronephrosis on few occassions may cause pain. Please do consult a urologist and go for cystoscopy or ascending cysto-urethrogram for better delineation of the pathology causing bilateral hydronephrosis.
Thank you.
Answered: Fri, 12 Oct 2012
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