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During my yearly physical, my urine tests came back with some concerns. The main was microscopic hematuria. There was also a little protien and slightly elevated calcium oxalte (?) whatever it is that shows possible stones. Anyway, I had a KUB xray, a renal ultrasound and a cyctoscope. All came back negative. The Dr told me to just come back in 6 months. Not sure what the plan is. Is this standard? I have a dull ache that comes and goes in my left flank, right where my kidney is. I had this same ache about 13 years ago and had a IVP done and it was negative also. Should I just wait the 6 months or should I have other tests done? Dr said they didn't check for more blood as once it's found that means some type of problem. Also, no infection.


You had a full evaluation for hematuria that did not show anything.  That is quite common.  The result of the tests indicate no significant tumors, cancers or stones.  The exact source of the microscopic blood could not be determined.  Your pain may or may not have anything to do with the kidneys.  If your physicians think its likely, they may ask for some more x-rays such as an IVP to look further into it.  The IVP you had was negative, however.

The presence of calcium oxalate crystals in the urine just means that conditions are right for possibly making a stone which you did not do.

Your physicians have done what they reasonably need to and have not found a problem.


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Stephen W. Leslie, MD


Questions concerning erectile dysfunction, kidney stones and prostate disorders including prostate cancer. I have a special interest in kidney stone disease prevention.


Full time practicing urologist with 30 years experience. Associate Professor of Surgery and Chief of Urology at Creighton University Medical Center. Editor in Chief of eMedicine Urology internet textbook. Author of only NIH approved book written for patients by a urologist on the subject of kidney stones "The Kidney Stones Handbook". Inventor of the "Parachute" and "Escape" kidney stone baskets and the "Calculus" stone prevention analysis computer program.

American Urological Association, Ohio State Medical Association, Sexual Medicine Society

Men's Health, Journal of Urology, Urology, Healthwatch Magazine, Emergency Medicine Monthly, eMedicine, "The Kidney Stones Handbook", and numerous articles in various newspapers. He is also the editor of the Urology Board Review by McGraw-Hill used by urologists to study for their Board Certification Examinations.

Graduate of New York Medical College with residencies completed at Metropolitan Hospital New York, Albany Medical Center and University of Wisconsin-Madison.

Awards and Honors
Thirlby Award of the American Urological Association. Rated as one the country's Best Urologists by the Independent Consumer's Research Institute

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