37M 1.2CM X 1.17 CM Renal Cyst Causing Considerable Discomfort?

Posted , 3 users are following.

Me: * Male

37 years old

5' 11"

150 Lbs


Healthy: Run ~20 miles per week, bike 10. Resting heart rate ~50bpm. Blood pressure 115/75ish. "Healthy" diet ("What does that mean?" Too much to type here, but serious thought/research goes into it; not an “extreme” diet; balance of animal protein and greens; low glycemic.)

My questions upfront are (but please read details):

1) Could a kidney cyst smaller than a marble really be causing substantial discomfort and develop so quickly? I’ve passed full turkey dinners through my ascending colon that were way less uncomfortable than this.

2) If not a kidney cyst, what else could it be?

3) What questions should I be asking my physician and nephrologist?


6+ Weeks ago: Started to feel a slight pressure at the tip the 10th and 9th rib, on my right hand side like someone constantly had two fingers resting there. The pressure is constant, and does not change when eating, bowel movement, waking, sleeping, hydrating, etc.

3 Weeks ago: Pressure became more noticeable, with defused pressure (not yet pain) noticeable in abdominal muscles. The pressure is constant, and does not change when eating, bowel movement, hydration, etc.

2 Weeks ago: All previous symptoms, but now notice it in the back muscles on the right hand side of the spine. The pressure is constant, and does not change when eating, bowel movement, hydration, etc.. Movement in certain positions makes the pressure more noticeable. Flex lower back; feel it there. Bend over, feel it in the 9th/10th rib. My 45-minute commute home is starting to get fairly uncomfortable; feels like there is a baseball sitting behind my 9th/10th rib. Sleeping in certain positions is now uncomfortable. 400MG (2 pills) of ibuprofen doesn’t touch it (tried this 3 or 4 times.) Area is starting to cramp when I run. Time to go see doc.

1.5 Weeks ago: Went to doc. X-ray negative. Physical digital pressure exam by doc. He says he doesn't feel anything; I don't feel any extra pain with him poking into my ribs and back. Says x-ray shows I might be a little constipated. Asked about BMs. One a day, but maybe a little less regular than normal. Prescribed Miralax; said if I don't feel better to get an ultrasound of upper right quadrant (gave me a referral.) Took Miralax for 5 days. Day 4 and 5, stool is getting pretty loose and almost diarrhea, and I feel empty, but that pain/pressure at the end of my ribs, abdominal, and in back didn't change one iota. Also doc ran tests while I was there (CBC, urine test, and serum test). Truncated results are below (was told nothing was abnormal.)

4 days ago: Ultrasound (fasted 12 hours prior.)

Today: Report received from ultrasound as follows--Liver and Pancreas have homogeneous echogenicity. Gallbladder physiologically distended without abnormal gallbladder wall thickening, pericholecystic fluid, or gallstones. Common bile duct measures 3mm. Right kidney measures 11.1 cm in length, containing an interpolar cyst of 1.2 cm x 1.17 cm. Visualized upper abdominal aorta and inferior vena cava are within normal limits.

I was referred to nephrologist for follow up, which will happen in the next 5 days or so, with my doc noting the cyst is the probable source of the problem.

Test results (full test results available upon request)


WBC 5.1K/uL

RBC 4.60M/mm3

HGB 14.3gm/dL

HCT 41.0%

MCV 89.1fL

MCH 31.1pg

MCHC 34.9g/dL

RDW 39.6fL









A/G RATIO 2.0mg/dL

GFR BLACK/WHITE >60mL/min/1.73m2


Blood, keytone, bilirubin: Negative

0 likes, 10 replies

10 Replies

  • Posted

    I have a 1cm diameter cyst in the kidney, found by accident after liver tumor removal check up and have no whatsoever problems.

    Then again, I am not sporty.

    Could you have micro torn your abdominal muscle? Can you try a low level laser therapy on that spot, where it hurts or pressures? 

    What does your doc say?

    • Posted

      Thank for your info here.   Doc thinks its the cyst cuasing the problem.  I have yet to talk to the Nephrologoist; will find out what he/she thinks and post back here.
    • Posted

      Yes please keep us posted with the expert's opinion. I hardly can believe the pain comes from this tiny hazelnut, but who knows.

      All the best!

  • Posted

    I have three cysts on my right kidney and one has grown from 35 mm  to 72 mm in the past two years.I'm told that they are harmless and pain I get on that side is not from them. The consultant at the hospital also has kidney cysts.

    • Posted

      Wow.  That's considerably larger than man.  Thanks for this input!

    • Posted

      *mine    (not man!)
    • Posted

      I also have masses of cysts on my liver.Liver and kidney ones are evidently quite common.

      My kidney ones are Bosniak Cysts of the type that evidently don't become cancerous. There are several grades of them.

  • Posted

    Update: ultrasound and CT scan came back clean. Kidney doctor said the cyst isn't am issue. Went to a GI doc and he wants to do a colonoscopy and beloved something up with my ascending colon. MTF...

    • Posted

      Thank you for updating!

      Let's see if your pain source can be found and tackled.

      Best of luck!

    • Posted

      There is now virtual colonoscopy but of course with that they cannot take any biopsies or remove any polyps. 

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