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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Ultrasound results showed right kidney measures 11.66 cm x 5.17

Answered by
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Dr. Michelle Gibson James

General & Family Physician

Practicing since :2001

Answered : 16682 Questions

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Posted on Mon, 11 Feb 2019 in X-ray, Lab tests and Scans
Question: Ultrasound results showed right kidney measures 11.66 cm x 5.17 cm x 5.71 cm. Echogenic medulla are noted suggesting medullary nephrocalcinosis.medullary sponge kidney. Inferior pole simple cyst 2.90 x 2.46 x 1.69 cm. The liver was the original reason for u/s. Showed mildly fatty, Should I be concerned about the kidney results?
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Answered by Dr. Michelle Gibson James 2 hours later
Brief Answer:
medullary sponge disease is benign

Detailed Answer:
HI, thanks for using healthcare magic

The medulla is a part of the kidneys that is found in everyone with normal kidney structure.

Medullary sponge refers to changes that are usually present since birth or congenital. It only refers to the certain sacs or cysts and it is not usually associated with any problems

Most cysts in the kidneys are simple meaning that they do not cause problems or they are not cancerous. More dangerous cysts are called complex cysts.


Medullary nephrocalcinosis means that there is increased levels of calcium in the kidneys, it is often due to a generally increased levels of calcium in the person. It may not be associated with problems in some persons but the cause of the high calcium needs to be determined.
There are different causes of increased calcium, if increased levels are actually found on blood tests.

Medullary sponge disease is one cause of medullary nephrocalcinosis so it possible that for you this is the reason for the calcium build up and your blood calcium is not significantly high

Your doctor may suggest checking calcium (if not already done) along with magnesium, phosphorus, kidney function and the hormones that play a role in calcium levels

Summary: the structural change -medullary sponge is generally benign but can contribute to calcium build up and lead to medullary nephrocalcinosis
In many no symptoms but bloods may need to be done

I hope this helps, feel free to ask any other questions
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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