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Doctor insights on: Mild Hydronephrosis Causes

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Mild hydronephrosis cause pain?

Mild hydronephrosis cause pain?

Stone obstruction: Which causes mild hydronephrosis can cause pain. U might have flank or abdominal pain following high fluid consuption from intrinsic obstruction due to stretching of kidney pelvis. Pain would lessen or go away with time ; only mild hydronephrosis would be seen on us. Repeat us after fluid load or during pain episode might give more information. Pain may well be due to other causes. ...Read more

Dr. Amrita Dosanjh
137 doctors shared insights

Hydronephrosis (Definition)

Due to abnormal amount of urine retained by kidney due to swelling of internal renal collecting system consisting of cayces & renal pelvis. Urinary collecting ducts drain into calyces which dreain into pelvis (like a funnel) draining into ureter. Causes mostly blockage, congenital or acquired from stone, fibrous tissue, growth or external pressure of pelvis or lower down, ...Read more


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Pain on left kidney. Ct scan shows nothing and ultrasound shows mild hydronephrosis. What would cause this?

Pain on left kidney. Ct scan shows nothing and ultrasound shows mild hydronephrosis. What would cause this?

UPJ stenosis: Ultrasound may detect early obstruction better than ct, and sometime the other way around. It depends. Anyway, left flank pain with mild hydronephrosis, and no stone is usually due to a narrowing of the joint between the ureter (pipe to the bladder) and the renal pelvis (holding area for urine). If there is a mild or partial "blockage" that could explain everything. ...Read more

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I have a 5mm stone that is stuck in the ureter, just outside the bladder. It has caused mild hydronephrosis and hydro-ureter. I have no pain at all, just a slight "awareness" in my lower back. 3 questions. 1. How swiftly must this be addressed" days?

No rush, may pass: Most 5 mm ureteral stones pass spontaneously. Your symptoms are mild and you have had either a ct or a renal ultrasound & are under care so there is no immediate need for intervention. Urine should be filtered in case stone is passed. Studies can be repeated in 2 weeks, or sooner if symptoms increase, risk of renal damage is minimal. Stone can be removed later as needed.Ureter. ...Read more

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Causes of hydronephrosis?

Causes of hydronephrosis?

Several: Blockage in the ureter, bladder neck or urethra. This can be internal, external or within the walls of these organs.There are several causes. ...Read more

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Can hydronephrosis cause pylonephritis?

Can hydronephrosis cause pylonephritis?

Not cause/predispose: Hydronephosis does not cause pyelonephritis but it predisposes to it. ...Read more

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What is left mega urethra and unilateral hydronephrosis? What causes it?

What is left mega urethra and unilateral hydronephrosis? What causes it?

Here are some...: Oftentimes, the described condition is a congenital anomaly resulting from poorly innervated distal atonic ureter, which is usually found incidentally on imaging studies for other reasons. Such adynomic segment and resulting massive ureteral dilation is prone to bleed upon trauma and to induce bacterial UTI so to precipitate active evaluation. More? Ask urologist or radiologist timely. ...Read more

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Is it ok to drink lots of water if I have mild hydronephrosis?

Is it ok to drink lots of water if I have mild hydronephrosis?

Probably: In general, hydronephrosis is caused by either partial obstruction of the ureter or bladder, by reflux up the ureter from the bladder, or by large urine production. Excessive fluid intake may exacerbate this condition. It is important to have an evaluation to understand its cause and to determine the best means of observing it for deterioration. ...Read more

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My daughter has hydronephrosis. No reflux, no obstruction. What can cause this?

My daughter has hydronephrosis. No reflux, no obstruction. What can cause this?

Nothing serious: Hydronephrosis can be caused by obstruction or reflux but also can be normal or not a serious problem (usually low grade hydronephrosis). Your doctor has ruled out all the worrisome things (reflux or blockage). Is your daughter potty trained? Young children often hold their urine too long and this can cause mild hydronephrosis. Have her pee every 2 hours and make sure she isn't constipated. ...Read more

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Can i get some advice for mild hydronephrosis in 2 month male child. What is best treatment?

Can i get some advice for mild hydronephrosis in 2 month male child. What is best  treatment?

No treatment: Will likely be required. Hydronephrosis is usually discovered at prenatal obstetric ultrasound. Vast majority do not progress or remain stable ; thus require no treatment. Most mild hydronephrosis cases can be monitored by pediatricians who can order follow-up ultrasounds without need to refer to pediatric urologist. Suggest follow-up ultrasound examination in 6 months if only mild at 2 months. ...Read more

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I have right flank pain and imaging studies showing mild hydronephrosis on that side (no stones). What could be causing this?

I have right flank pain and imaging studies showing mild hydronephrosis on that side (no stones). What could be causing this?

Suggests blockage: Despite the lack of stones on imaging this scenario suggests a blockage of the right ureter. It is possible that a stone was passed and time is needed for local dilation to resolve. There could also be other causes like mass or stricture. If the imaging study was an ultrasound, i would talk to my doctor about further evaluation to claify the cause. Follow up studies will ensure resolution. ...Read more

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