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Doctor insights on: Bilateral Renal Cysts

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If person has "bilateral renal cysts", does that mean it's cancer?

If person has "bilateral renal cysts", does that mean it's cancer?

No.: "bilateral renal cysts" means that both kidneys (right and left) contain cysts. While some kidney cancers may be cystic, most renal cysts are benign. It would be good to ask the doctor who ordered the imaging study that found the renal cysts what he/she thinks of these cysts and the likelihood that they might be cancer. Every case is unique. Hope that this helps. ...Read more

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Dr. Jonathan Jassey
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Cyst (Definition)

A cyst is a structure or mass that consists of a cellular lined sac. It is typically filled with fluid but may be filled with solid material. It can be congenital, traumatic, or acquired. They may develop nearly anywhere in the body and usually require complete excision for eradication or they are likely to recur. Fluid filled sacs that are not cellular lined ...Read more


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Is it common for a 36y pt to have multiple bilateral renal cysts, hepatic cysts, splenic cyst, and adrenal cyst all at once? Shall i worry about mets?

Is it common for a 36y pt to have multiple bilateral renal cysts, hepatic cysts, splenic cyst, and adrenal cyst all at once? Shall i worry about mets?

Something else : Do you have a diagnosis? Family history of polycystic kidney disease? Radiologist is probably best dr to talk to as will correlate your history with specific cyst patters seen on imaging. Will also be able to recommended additional diagnostic tests & use intervention techniques to diagnose, drain & treat as needed. Apckd > hydatid cysts can do this. Confirm its adrenal cyst vs adenoma, . ...Read more

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Dr. Jonathan Jassey
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Is it normal for 35 y/o non-alcoholic female w/o family history of PKD to develop multiple painful bilateral renal cysts, high urine output & high bp?

Is it normal for 35 y/o non-alcoholic female w/o family history of PKD to develop multiple painful bilateral renal cysts, high urine output & high bp?

Isolated PKD: PKD is autosomal dominant. One PKD allele is all that is needed to express PKD. Expression is over 90%. What you report is not normal, nor usual. Over 90% of expressed, affected persons have an affected parent. Yet, old data indicate that ~10% of affected persons do not have a parent with expressed PKD. Yet new data reveal that PKD gene mutations do exist in a parent without expression. ...Read more

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Had CT done showed small bilateral renal cysts with hydronephrosis. Have been cancer free since 6/20/13. Should i be concerned?

Had CT done showed small bilateral renal cysts with hydronephrosis. Have been cancer free since 6/20/13. Should i be concerned?

Good you are : Cancer free . Don't worry about renal cysts , the concern is the cause of hydronephrosis , speak to your doctor. What is causing ( based on info, taking tamoxifen you have breast ca ? ). ...Read more

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Dr. Jonathan Jassey
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I've had multiple bilateral simple renal cysts for a few years. Recent ultrasound shows internal echoes in one of them. Can simple cyst turn complex?

I've had multiple bilateral simple renal cysts for a few years. Recent ultrasound shows internal echoes in one of them. Can simple cyst turn complex?

Yes: A simple cyst can become more complex if bleeding or infection occurs within it. Rarely, intracystic malignancy can occur. If it is just some low level echoes, it is probably nothing to worry about. If there are multiple renal cysts, it is not uncommon for one or two to have some internal echoes. If there are no suspicious features, sometimes they are ignored, followed with serial US, or f/uCT ...Read more

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I have pelvic ultrasound yesterday and found out tiny non obstructing nephrolithiasis, bilateral; small renal cyst measuring 9mm, left.Should i worry?

I have pelvic ultrasound yesterday and found out tiny non obstructing nephrolithiasis, bilateral; small renal cyst measuring 9mm, left.Should i worry?

No: Small kidney cysts are pretty common. And small non obstructing stones should not cause much issue especially if you have a history of prior stones. If concerned, check with your urologist or physician who ordered the tests. ...Read more

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What is small renal cyst, bilateral?

Cysts: Renal cysts are small collections of fluid in the kidneys. They occur quite frequently in people and are often only discovered when doing a routine exam for another reason. Most renal cysts do not have any medical significance but it would be reasonable to discuss with doctor. ...Read more

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What is significance of small bilateral renal cortical cysts if renal function tests are normal?

What is significance of small bilateral renal cortical cysts if renal function tests are normal?

Not much, but: Need a follow up ultrasound in a few years to see if increasing suggestive of polycystic kidney disease (pkd). If this is the case there is a chance to lose kidney function over long years. It is not a cancer. But increasing cysts number and size can overtake kidneys. Chances are, none of that will happen to you. But, better safe than sorry. Pkd is a benign and slow condition but may cause failure. ...Read more

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