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FAQs about PKD & Kidney Cysts

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Causes for the Increase in Kidney Size

I have multiple cysts on both kidneys. Recently, my kidneys are increasing in size, because of which Dr thinks I have PKD. Is there any other reason for the increase

The Doctor Answered:

PKD is an inherited kidney problem, so is there anyone in your family has this genetic kidney problem? PKD is a kidney disorder marked by countless kidney cysts which enlarge over time. When the size and amount of cysts enlarge to a certain level, kidney enlarges. Therefore, if there is PKD history in your family, your enlarged kidney is very likely to be caused by PKD.

In clinic, aside from PKD, there are some other causes for the increase in kidney size:

1. Hydronephrosis

Hydronephrosis is one of the significant causes for the increase of kidney and usually occurs when urethra gets blocked (mostly because of kidney stone). In such a case, urine can not flow into bladder and flow back up towards the kidney, leading to swelling or edema.

2. Pyelonephritis

Pyelonephritis is an infection of the kidney and usually results from bladder infection or blood infection. Pyelonephritis always brings patients lots of abnormal clinical manifestaions like protien in urine, blood in urine, back pain, high blood pressure, fever, frequent urination and foul-smelling urine and so son. Also, in some cases, patients may found their kidneys increase in size.

3. Tumor in kidney

Cancer that begins in the kidneys can make the kidney appear enlarged on ultrasound. However, it usually only affects one kidney.

These are the several causes for the increase of kidney size. Hope it is helpful for you. Besides, diagnosis of disease is always based on clinical examination, so I suggest you to do more tests to found out the root cause for the increase of your kidney size.

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