Is a complex kidney cyst always cancer, or turn to cancer?

A complex cyst may be benign or may be malignant.  Careful follow up by an experienced clinician is usually indicated to try and differentiate between the benign complex cyst and the malignant complex cyst.  An experienced urologist is the most common person to determine this difference.

Posted in Kidney Cysts, Kidney-Related Health Questions

Studies show that living donor kidneys last longer (on average) than cadaver kidneys. Do the cadaver kidney statistics include kidneys received from expanded criteria donors (deceased donors with high blood pressure, older age, etc.)? When kidney transplants fail due to recipients’ deaths, would the length of time the kidneys worked also be included in the short/long-term graft survival statistics?

The United Network for Organ Sharing (UNOS web site: reports the statistics regarding both living donor and cadaveric donor kidney transplants.  Expanded criteria donors (ECD kidneys) are included in the statistics for cadaver donors but they are also separately reported.  The statistics regarding patient mortality and graft survival also are broken out into death with functioning transplant, death from transplant failure and graft survival.  You can review these statistical tables at:

Posted in Clinical Trials/Studies, Kidney-Related Health Questions, Transplantation

I ended up on dialysis Aug. 1, 2014. I went to a follow up appointment with my primary about something different and he noticed I was pale. He ordered a finger stick for hemoglobin and it was 6.8 so off to the ER I went and found out that my creatinine was 14. They still don’t know the reason for the kidney failure but they only biopsied one kidney. Is it possible to have one good one bad or do they both go bad together?

Both kidneys go bad together.  With a serum creatinine of 14 milligrams per deciliter (mg/dl), both kidneys have to be bad

Posted in Chronic Kidney Disease, Dialysis, Kidney Failure, Kidney-Related Health Questions, Serum Creatinine

I have MS & my neurologist wants to get a repeat MRI with contrast. I expressed concern about the contrast because of my left kidney, which has had numerous episodes of kidney stones, most recently last month. I was tested for Creatinine and calculated GFR. The creatinine result is .95, the gfr simply says >60 (it doesn’t give an actual number). My neurologist says this is a normal result. However, when I used a GFR calculator online the result seemed to be abnormal. I am age 50, female, 150 pounds, 5 ft 8 inches. I am very sedentary due to MS. My left kidney was hurting again this past weekend but I didn’t note any stones. I don’t want to risk the health of my kidney for a test that is not at all crucial. I would be most grateful for any clarification you can provide about my GFR and risk for Kidney Disease.

The contrast used for Magnetic Resonance Imaging (MRI) is usually a gadolinium containing compound and should be used with caution if you have an estimated glomerular filtration rate (eGFR) of less than 30 milliliters per minute per 1.73 meters squared.  The equations that we use to calculate an eGFR are generally more accurate with eGFR less than 60 and when the value is greater than 60, then the result is commonly given as “greater than 60″ and the absolute number not reported.   Hence, my estimate is that you have relatively normal kidney function and an MRI scan with contrast should be relatively safe.  I suggest you consult with your primary care physician as well.

Posted in Kidney Stones, Kidney-Related Health Questions, Laboratory Testing, Medication and Kidney Function

I had my kidney operated on in July for a matrix kidney > stone. It has been 3 mos and my kidney still hurts, urinanalysis > shows nothing (blood, no). I don’t want another kidney stone to be > forming and doctor says since nothing shows on urinalysis, wait 3 > weeks and call back. I’m worried. The doctor doesn’t have or give > any info about recovery. Should I be concerned? Is pain 3 mos later normal?

Pain after kidney surgery is common.  Your question is a surgical and urological problem.  I am a nephrologist and do not deal with these problems.  I suggest you consult with a urologist.

For general information about kidney stone prevention please click here.

Posted in Ask the Doctor, Kidney Stones, Symptoms and Side Effects, Urological Issues

I have a solitary kidney, one was removed this April after a refractory UPJ obstruction (there were 5 surgical attempts to fix it and none succeeded). I still have pain where my kidney was, what can I do? Secondly, I have had my first go round with Pyelonephritis on my L kidney. How can I keep it healthy and what do I need to watch for?

You have a urological and surgical problem.  I am a nephrologist and deal with acute and chronic kidney disease.  I suggest you consult with your urologist for a solution to your questions.

For general information about living with one kidney please click here

Posted in Kidney-Related Health Questions, Nephrectomy / One kidney, Symptoms and Side Effects, Urological Issues

My mom have a cyst on right kidney and kidney stones also. What is the cause of this? The doctor advises her to have surgery. Is there any other option besides surgery? Mom is 67 y/o and complaining of on and off pain.

Your mother has a urological surgical problem.  I am a nephrologist.  Your question should be addressed to a urologic surgeon.

Posted in Ask the Doctor, Kidney Stones, Treatments, Urological Issues

Kidney issue stone is removed but still I have pain right kidney when I push my tummy inside. Kindly discuss my issue as I am waiting for your answer.

The problem you discuss is a urological problem.  I am a nephrologist and do not treat kidney stones.  You should discuss this with a urologist.

Posted in Ask the Doctor, Kidney Stones, Symptoms and Side Effects, Urological Issues

I have exhausted all urologists and a urogynocologist. My symptoms are asymptomatic UTI’s which have resulted in severe infections. I have intermittent fever with no explanation. I have been diagnosed with IBS, which has resulted in many trips to the ER…. where these asymptomatic UTIs have been found. I have had bouts of no appetite – without any weight loss, in fact some weight gain. I often pass small amounts of urine even when I know I am sufficiently hydrated, excessive fatigue (on bad days) lower back pain, and high blood pressure that we can’t seem to control. Too many doctors have said “hang in there”, and I am desperate to find some reason for all these symptoms. I do have a floating kidney, which no one seems to think is important. All urologists and two PCP have said, “I can’t find anything wrong.” I am desperate, and decided to look up symptoms of kidney disease, and there seems to be some correlation. I have no family history of kidney problems, and > wondered if maybe it’s a kidney problem. Can you give me anything!

I am a nephrologist and do not treat urological problems.  I do not identify a kidney disease in the symptoms that you describe.  This sounds more like a lower urinary tract problem.  You may need to seek consultation with a urologist at a medical school in your area.

Posted in Ask the Doctor, Symptoms and Side Effects, Urological Issues

What specialty in medicine treats complex kidney cysts that might need excising?

Excising simple kidney cysts is no longer recommended as a surgical procedure.  Complex cysts may become cancerous over time and this is generally evaluated by a urologist.  If the complex cysts grows over time, then this should be evaluated by a surgeon such as a urologist.

Posted in Kidney Cysts, Kidney-Related Health Questions