It is a moment etched into the memory of every parent: the quiet hum of the ultrasound room, the cool gel on the skin admixed with the joy and anticipation of seeing that tiny, flickering heartbeat. But sometimes, the mood shifts as the sonographer lingers a little longer on the baby’s midsection. And concern clouds the parents mind once the doctor mentions “dilated kidneys” or “renal pelvis stretching.” In that very moment, the joy of pregnancy can be clouded by a fog of “what-ifs.” A train of queries floods their minds: What does it mean? How will my baby be delivered? Is it treatable and does my newborn need surgery once born? Can my baby ever lead a normal life?”

We live now, in a golden age of medical technology. What once required major surgery and weeks of recovery can now often be managed with a “wait and watch” approach or precision, keyhole procedures.

Why early diagnosis is a gift

Decades ago, kidney issues in children were often only discovered when a child became severely ill or developed a high fever. Today, the majority of these conditions are caught antenatally (before birth). Modern high-resolution ultrasounds act as a sophisticated early-warning system. While hearing that your unborn child has a “kidney anomaly” is terrifying, it has a significant advantage in allowing doctors to plan and monitor the foetus. Often these so-called “anomalies” are simply variations in development that require nothing more than a follow-up scan after the baby is born, with no need for intervention. When it comes to your child’s health, early knowledge isn’t just information; it allows reassurance, preparation, and preventive intervention.

Understanding hydronephrosis

If your doctor mentions “kidney stretching” or “dilation,” they are likely talking about hydronephrosis. This is the most common condition identified during prenatal scans. Essentially, it means the area of the kidney where urine collects (the renal pelvis) is wider than normal. The good news is that in a vast majority of babies, this dilation is transient. As the baby grows and the urinary system matures, the stretching often resolves on its own.

While parental anxiety is high here, the medical strategy is often “watchful waiting”, with the use of postnatal ultrasounds to track the dilation. In most cases, no treatment is needed. Early detection allows for careful monitoring, turning what can feel scary into a story of normal development and reassurance.

The valve issue

In some cases, the ultrasound shows that both kidneys and ureters are dilated and the baby’s bladder is unusually thick or full. This can point to a condition known as Posterior Urethral Valves (PUV), which occurs only in boys. In PUV, there is a small, extra fold of tissue (the valve) in the tube that carries urine out of the bladder (the urethra). Because the urine can’t exit easily, it backs up, causing pressure to both the bladder and the kidneys. When detected early in pregnancy, it involves extensive counselling of the parents regarding the nature of illness, continuation of pregnancy (dependent on level of liquor- fluid within mother’s uterus and nature of kidneys), and the natural course of the disease.

Treating the condition the “old way” might have involved open surgery, opening out the urinary bladder/ureter, on a fragile newborn. The “modern way” is far more elegant and even during the newborn period, paediatric urologists use a tiny camera (cystoscope) to enter the urethra and “ablate” or clear the valve. No incision/ scar is visible externally. A path for the passage of urine is cleared, and this provides immediate relief of pressure on the kidneys.

Recurrent infections

Once your child comes home, one thing to stay alert for is a Urinary Tract Infection (UTI). Recurrent infections, especially those accompanied by high fever often signal an underlying issue called Vesicoureteral Reflux (VUR). Normally, urine flows one way: from the kidneys, down the ureters, into the bladder. In VUR, the valve mechanism where the ureter meets the bladder doesn’t close properly, allowing urine to wash back up toward the kidney, raising the risk of infection and kidney damage if ignored.

Parents often worry about long-term antibiotic use or “big” surgeries. The good news? Treatment today is safe, effective and minimally invasive. It can involve:

Endoscopic injection – This is a simple fix with a quick recovery. Using a tiny camera, the doctor places a special gel at the opening of the ureter forming a small cushion that works like a one-way gate, preventing urine from flowing backward. It is a day-care procedure with no cuts and your child is back home the same day after recovery.

Laparoscopic surgery – For a higher grade of such cases, there are now strong solutions via a gentle approach. Surgeons use tiny instruments through 3-5mm incisions to reposition the ureter to a normal location. This offers the success rates of traditional open surgery with smaller scars and a fraction of the pain.

Ailments in older children

A common scenario involves a 5–15-year-old child complaining of intermittent “flank pain” (pain in the side or back), especially after drinking a lot of fluids with swelling of the tummy, often caused by a Pelviureteric Junction (PUJ) Obstruction – a condition with blockage at the point where the kidney meets the ureter. For these older children, the gold standard is now Robotic-Assisted Surgery. The surgeon operates with a 3D, high-definition view (10x magnification) and “wristed”, tremor-filtered instruments that have a greater range of motion than the human hand. Robotic surgery allows for incredibly fine suturing in the delicate tissues of a child, ensuring the blockage is cleared with microscopic accuracy. With 1-2 days of hospital stay, your child is back on his/her feet within a week.

Towards safe, gentle care

For any parent, hearing that their child needs intervention can be frightening and overwhelming. But times have changed, and with advancing medical technology, paediatric urology today focuses on minimal intervention, maximum results. We are moving away from large scars and long hospital stays. From newborns to teens, with the tools at our disposal—endoscopes, laparoscopes, and robots- care is gentler than ever. With advanced, child-friendly technology, fixing problems gently and safely is a reality so that your little one can get back their laughter, playtime, and a healthy childhood.

(Prof. Dr. Ramesh Babu Srinivasan is senior consultant in paediatric urology, Sri Ramachandra Institute of Higher Education, Chennai. drrameshbabu1@gmail.com)

Published – March 13, 2026 06:00 am IST


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