Thank you for your patience and we apologize for the inconvenience.
Our hold times may be longer than usual as our team is currently undergoing a transition and training to serve you better.
For faster service, we encourage you to use our patient portal to message your care team, request appointments, or access health information anytime.
Thank you for your patience and we apologize for the inconvenience.
Our hold times may be longer than usual as our team is currently undergoing a transition and training to serve you better.
For faster service, we encourage you to use our patient portal to message your care team, request appointments, or access health information anytime.
  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
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  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
  • UPNT clinics will open at a delayed time at 10 AM on 11/11-23 Secondary to the ice storm. we will continue to update on the website as conditions may change.
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Understanding UPJ Obstruction: Expert Care in Dallas-Fort Worth

Navigate Ureteropelvic Junction Obstruction with Precision and Compassion at UPNT
Experiencing flank pain, recurrent infections, or learning about a kidney blockage can be incredibly unsettling. In the Dallas-Fort Worth Metroplex, when faced with a Ureteropelvic Junction (UPJ) obstruction, you deserve clarity, confidence, and access to the nation’s leading urological experts. At Urology Partners of North Texas (UPNT), we specialize in diagnosing and treating UPJ obstruction in adult patients, ensuring your kidney health is preserved and your quality of life is restored. Our unparalleled expertise, particularly in robotically-assisted pyeloplasty, and patient-centered approach make us the premier choice for this delicate condition.

What is a UPJ Obstruction? Unpacking the Blockage

A Ureteropelvic Junction (UPJ) obstruction occurs when there is a blockage at the junction where the renal pelvis (the funnel-shaped part of the kidney that collects urine) meets the ureter (the tube that carries urine from the kidney to the bladder). This blockage prevents urine from flowing normally out of the kidney, causing it to back up and swell. This swelling of the kidney, known as hydronephrosis, can progressively damage kidney function if left untreated.
unpacking-the-blockage

Key Facts About UPJ Obstruction:

  • Location: The blockage happens precisely where urine transitions from the kidney into the ureter.
  • Impact: Impedes urine flow, leading to urine buildup and swelling of the kidney (hydronephrosis).
  • Consequence: If untreated, chronic hydronephrosis can impair kidney function and potentially lead to permanent kidney damage.

Causes of UPJ Obstruction: Congenital & Acquired (Affecting Adults)

While UPJ obstruction can be congenital (present at birth), it is important to note that UPJ obstruction can also be diagnosed later in adulthood, sometimes even in older age. At UPNT, we focus on treating adult patients (18 years and older) with this condition. The causes vary depending on when the obstruction develops:

Congenital Factors (Manifesting Later in Life):

  • Some individuals are born with an intrinsic narrowing or abnormal development of the junction that may not cause symptoms until later in life, perhaps due to increased demands on the kidney or the development of a stone.
  • An abnormally positioned blood vessel (an accessory renal artery or vein) can cross over and compress the ureter at the UPJ, creating an external blockage that manifests in adulthood.

Acquired Factors (Develops Over Time):

  • Scar Tissue: Previous infections, inflammation, kidney stones, or even prior surgeries in the kidney or ureter area can lead to the formation of scar tissue that narrows the UPJ.
  • Kidney Stones: A stone that becomes lodged directly at the UPJ can cause an obstruction.
  • Infection: Chronic or severe kidney infections can lead to inflammation and subsequent scarring.
  • Trauma: Injury to the kidney or surrounding area can result in scar tissue formation.
  • Rarely, Tumors: In very rare instances, a tumor (benign or malignant) can develop at or near the UPJ, causing an obstruction.

Recognizing the Signs: Symptoms of UPJ Obstruction

The symptoms of UPJ obstruction can vary widely depending on the severity of the blockage, and whether it’s intermittent or constant. Some individuals, especially adults diagnosed later in life, may have no symptoms at all, with the condition discovered incidentally during imaging for other issues.
symptoms-of-upj-obstruction

Common Symptoms in Adults May Include:

  • Flank or Back Pain: This is a hallmark symptom, felt on the side of the affected kidney (upper abdomen or back). The pain can be dull and constant, or sharp and intermittent, often worsening with increased fluid intake (like after drinking coffee, alcohol, or a large amount of water) as urine builds up.
  • Nausea and Vomiting: Often accompanies severe pain episodes.
  • Recurrent Urinary Tract Infections (UTIs): Blocked urine flow creates a breeding ground for bacteria, leading to frequent or severe kidney infections (pyelonephritis), sometimes with fever and chills.
  • Hematuria (Blood in Urine): May be visible or microscopic.
  • Kidney Stones:The stagnant urine can lead to the formation of kidney stones.
common-symptoms-in-adults

Precision Diagnosis of UPJ Obstruction at UPNT: Your Path to Clear Answers

Accurate diagnosis of UPJ obstruction is essential for preserving kidney function and planning effective treatment. At Urology Partners of North Texas, we utilize the most advanced diagnostic insights and our deep expertise to confirm the presence, location, and severity of the blockage in our adult patients.

Our Comprehensive Diagnostic Process May Include:

  • Detailed Medical History & Physical Exam: Your UPNT specialist will thoroughly discuss your symptoms, medical history, and conduct a careful physical examination.
  • Blood and Urine Tests: These help us assess overall kidney function (e.g., creatinine, BUN levels) and check for infection
  • Advanced Imaging Studies (Performed in Collaboration with DFW's Best Imaging Centers):
  • While we do not perform imaging studies directly at our facility, we work closely with the best imaging centers in the Dallas-Fort Worth Metroplex to obtain the most precise and high-resolution images.
  • Renal Ultrasound: Often the first imaging test, performed at our partner centers, it uses sound waves to visualize your kidneys and check for hydronephrosis (swelling).
  • CT Scan (Computed Tomography): Detailed cross-sectional images of your kidneys and ureters, obtained at our partner imaging centers, help us pinpoint the exact location and likely cause of the obstruction.
  • MRI (Magnetic Resonance Imaging) / MRU (Magnetic Resonance Urography): These advanced studies, also performed by our trusted imaging partners, offer excellent soft tissue detail without radiation exposure, providing clear views of your urinary tract.
  • Diuretic Renal Scan (e.g., MAG 3 Renal Scan): This crucial nuclear medicine test, performed at specialized imaging centers, confirms the diagnosis. A radioactive tracer is injected, and images are taken as it passes through the kidneys. A diuretic is then given to stimulate urine flow. We meticulously evaluate the results of this scan with the radiologists to assess how well each kidney is functioning and how efficiently urine drains through the UPJ, revealing the degree of blockage.

Why Choose Urology Partners of North Texas for Your UPJ Obstruction Care in DFW?

When faced with a UPJ obstruction, choosing the right medical team is paramount. At Urology Partners of North Texas, we offer a depth of expertise, a breadth of experience, and a level of personal care that truly distinguishes us as the premier choice for adult patients in the Dallas-Fort Worth area. We don’t just understand UPJ obstruction; we master its resolution, especially through advanced robotic techniques.
upj-obstruction-care-in-dfw
  • DFW's Leading Expertise: Our urological surgeons are among the country's leaders in complex reconstructive procedures, including those for UPJ obstruction. You benefit from their extensive experience and refined techniques, honed over thousands of cases.
  • Exceptional Robotic Pyeloplasty Experience: For UPJ obstruction in adults, our primary surgical solution is the robotic pyeloplasty. Our physicians at UPNT have collectively performed well over 10,000 robotic cases, leveraging the precision of the da Vinci® Robotic Surgical System. This vast experience translates into minimally invasive, highly effective repair of your UPJ obstruction, allowing for faster recovery and excellent long-term outcomes.
  • Strategic Partnership with Top Facilities: We proudly perform our advanced robotic procedures at USMD Hospital in Arlington, a facility with an impressive institutional record of over 20,000 robotic cases. This collaboration ensures you receive care in a state-of-the-art environment with exceptional support.
  • Comprehensive Diagnostic Capabilities: We utilize a full range of advanced imaging and functional studies to precisely diagnose your UPJ obstruction, leading to clear answers and tailored treatment plans
  • Personalized Approach for Adults: We understand the concerns surrounding a UPJ obstruction in adults. Our team is dedicated to providing compassionate, empathetic care, thoroughly explaining your condition, and guiding you through every step of your journey to better kidney health.
  • Coordinated, Integrated Care: From diagnosis to post-treatment recovery, our multidisciplinary team works cohesively to ensure your care is coordinated, efficient, and focused entirely on your best outcome.
  • Trusted in the DFW Community: As a cornerstone of urological care in the Dallas-Fort Worth area, UPNT is committed to serving our community with integrity, cutting-edge science, and a steadfast commitment to your health. We want you to love your experience with us and trust us with your care.

Frequently Asked Questions (FAQs) About UPJ Obstruction

Here are answers to common questions our adult patients in Dallas-Fort Worth often ask about Ureteropelvic Junction (UPJ) obstruction:

What is hydronephrosis in relation to UPJ obstruction?

Hydronephrosis refers to the swelling of the kidney due to a buildup of urine. In UPJ obstruction, the blockage at the ureteropelvic junction prevents urine from draining normally, causing it to back up into the kidney and lead to this swelling.

The severity of UPJ obstruction varies. While some cases can be mild, moderate to severe obstructions in adults can lead to kidney damage, pain, and recurrent infections, making expert evaluation and potential intervention by a UPNT specialist crucial to preserve kidney function.

Yes, indeed. The stagnant urine flow caused by a UPJ obstruction can create an environment conducive to the formation of kidney stones. Addressing the obstruction is key to preventing this complication.

For significant or symptomatic UPJ obstructions in adults, the primary treatment at UPNT is typically a robotically-assisted pyeloplasty. This advanced minimally invasive procedure repairs or bypasses the blockage to restore normal urine flow from the kidney. (You can learn more about this procedure on our dedicated pyeloplasty page.)

Our diagnosis involves a comprehensive approach including a detailed medical history, physical exam, blood and urine tests, and advanced imaging such as renal ultrasounds, CT scans, MRIs, and crucially, diuretic renal scans (like MAG 3) to precisely assess kidney function and drainage.

Our UPNT surgeons are among the country’s leaders in robotic surgery, having performed over 10,000 robotic cases. This unparalleled experience with robotic pyeloplasty translates to exceptional precision, often leading to less pain, smaller incisions, faster recovery, and excellent long-term outcomes for our adult patients.

Take the Next Step Towards Clearer Kidney Health. Contact UPNT Today.

If you or a loved one are experiencing symptoms of a UPJ obstruction, or have received a diagnosis and are seeking expert care for adults in Dallas-Fort Worth, reach out to Urology Partners of North Texas. We are here to provide clarity, confidence, and the highest standard of care that can resolve your condition.

  • Call Our DFW Team Today to Schedule Your Appointment:
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Dr. Weber Chuang will be retiring from medical practice effective September 26, 2025. To ensure that your medical care continues seamlessly, your ongoing care will be transitioned to another physician within our practice. You may schedule appointments directly by contacting our office at 866-367-8768 or via your patient portal. Your medical records will remain securely within the practice, so there is no additional step required on your part unless you wish to request a transfer elsewhere.
Dr. Weber Chuang will be retiring from medical practice effective September 26, 2025.
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