An overview of hydronephrosis

Written in association with: Mr Nav Johal
Published: | Updated: 12/02/2024
Edited by: Aoife Maguire

Hydronephrosis is a condition which involves swelling of the kidney due to a backup of urine, provoking frequent urination and causing discomfort. Mr Nav Johal, distinguished consultant paediatric urologist provides an overview of the condition, including diagnosis and treatment options.

 

 

What is hydronephrosis, and what causes it?

 

Hydronephrosis is a condition characterised by the swelling or dilation of the kidneys due to the accumulation of urine. It can be physiological and resolve spontaneously or it can be caused by a blockage or obstruction that may require surgery.

 

What are the symptoms of hydronephrosis, and when should I seek medical attention?

 

The majority of children with hydronephrosis are asymptomatic but some patients may have symptoms such as flank pain, frequent urination, urinary urgency, and in severe cases, nausea and vomiting. If you experience persistent or severe symptoms, it is important to seek prompt medical attention, as untreated hydronephrosis can lead to kidney damage.

 

How is hydronephrosis diagnosed, and what tests are typically conducted?

 

Diagnosis of hydronephrosis involves a thorough medical history, physical examination, and imaging studies such as an ultrasound, CT scan, or MRI. Other tests such as nuclear medicine scans are often required. These tests help identify the underlying cause and assess the extent of the kidney dilation.

 

What are the treatment options for hydronephrosis?

 

The treatment for hydronephrosis depends on the underlying cause. It may include addressing infections with antibiotics or surgically correcting structural abnormalities causing obstructions. In some cases, a temporary drainage tube (catheter) may be inserted to alleviate pressure on the kidneys.

 

Can hydronephrosis lead to long-term complications or affect kidney function?

 

If left untreated, chronic hydronephrosis can lead to kidney damage and impaired kidney function. Early diagnosis and appropriate treatment are crucial to prevent long-term complications. In many cases, timely intervention can resolve the underlying cause and restore normal kidney function. Regular follow-ups with a specialist are essential to monitor kidney health after treatment.

 

 

If you are suffering from hydronephrosis and would like to book a consultation with Mr Johal, do not hesitate to do so by visiting his Top Doctors profile today.

By Mr Nav Johal
Paediatric urology

Mr Nav Johal is a leading consultant paediatric urologist based at Great Ormond Street Hospital for Children and covers all areas of general paediatric urology including hydronephrosis, hypospadias, undescended testes, foreskin problems, urinary tract infections and vesicureteric reflux. Additionally he counsels parents born with prenatally diagnosed conditions affecting the kidney, bladder and genital anomalies.

Mr Johal obtained his primary medical qualification from Cardiff University and was appointed member of the Royal College of Surgeons in 2003. He was additionally awarded a PhD in 2013 on congenital bladder anomalies from University College London. He completed several fellowships in specialised areas of paediatric urology at the internationally renowned Great Ormond Street Hospital as well as the Royal Marsden Hospital in bladder reconstruction. He was made a fellow of the Royal College of Surgeons in 2014 and has been based at Great Ormond Street as a consultant paediatric urologist since 2017. Additionally, he holds the position of clinical lead of service at University College Hospitals London NHS Foundation Trust and is also a member of their prenatal nephro-urology counselling team.

Mr Johal is actively involved in research and has been previously been awarded numerous research fellowships. He is currently honorary associate professor at the Great Ormond Street Institute of Child Health and University College London. His academic work has been widely published in scientific journals and medical textbooks.

View Profile

Overall assessment of their patients


  • Related procedures
  • Kidney transplantation
    Hypertension (high blood pressure)
    Vascular disease
    Robotic surgery
    Gallstones
    Smoking cessation (quitting)
    Diabetes
    Acute kidney failure
    Diabetic nephropathy
    Nephritic syndrome
    This website uses our own and third-party Cookies to compile information with the aim of improving our services, to show you advertising related to your preferences as well analysing your browsing habits. You can change your settings HERE.