What is Urology?

Urology: Urinary & Reproductive Disease Diagnosis & Treatment

Urology treats urinary tract diseases in all genders and male reproductive issues, covering the kidneys, bladder, prostate, urethra, from infections to complex cancers.

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Precision Diagnostics at Liv Hospital

Precision Diagnostics at Liv Hospital

The diagnosis of bladder disease at Liv Hospital moves beyond basic testing to “Precision Diagnostics.” We aim not only to identify the disease but to characterize its molecular and functional subtypes. This allows us to tailor treatments specifically to the patient—whether that means selecting the right chemotherapy for a tumor or the right pacemaker setting for a neurogenic bladder. Our diagnostic pathway typically begins with non-invasive tests and escalates to advanced endoscopic and imaging procedures.

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Urinalysis and Cytology

Urinalysis and Cytology

The foundation of bladder diagnostics is the examination of the urine itself.

  • Urinalysis: A dipstick test provides immediate information regarding the presence of blood (hematuria), infection (leukocytes and nitrites), and sugar (diabetes).
  • Urine Culture: If infection is suspected, urine is cultured to identify the specific bacteria and determine which antibiotics will be effective (sensitivity testing).
  • Urine Cytology: This is a pathology test in which a pathologist examines urine under a microscope for cancer cells shed from the bladder lining. High-grade tumors shed cells easily, making cytology very sensitive for aggressive cancers. However, it may miss low-grade, slow-growing tumors.
  • Urine Molecular Markers: Liv Hospital employs advanced genomic tests (such as NMP22 or FISH) that look for genetic mutations or proteins associated with cancer. These are used as adjuncts to cytology to pick up cancers that might otherwise be missed.
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Urodynamics: Evaluating Bladder Function

Urodynamics: Evaluating Bladder Function

For non-cancerous conditions, such as incontinence, retention, or neurogenic bladder, imaging provides little insight into function. For this, we perform a Urodynamic Study (UDS). This is an EKG for the bladder.

During UDS, small catheters are placed in the bladder and rectum (to measure abdominal pressure). The bladder is slowly filled with sterile water while a computer records the pressures.

  • Cystometry: Measures the bladder’s feeling (sensation) and its ability to stretch (compliance). It identifies “Detrusor Overactivity” (spasms causing urgency).
  • Pressure-Flow Study: The patient urinates while the catheters are in place. This tells us if a weak stream is caused by a blockage (high pressure, low flow) or a weak bladder muscle (low pressure, low flow).
  • Electromyography (EMG): Patches on the skin measure the electrical activity of the sphincter muscles to ensure they relax when the bladder contracts. Failure to coordinate is called Detrusor Sphincter Dyssynergia (common in spinal cord injuries).
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Advanced Imaging Modalities

Advanced Imaging Modalities

When bladder cancer is diagnosed, or when explaining complex anatomy, imaging is required to “stage” the disease—checking if it has spread outside the bladder.

  • CT Urography (CTU): This is the preferred imaging test for hematuria. It provides a detailed view of the kidneys, ureters, and bladder. It is a multiphase scan that looks at the urinary tract before, during, and after contrast excretion.
  • Multiparametric MRI (mpMRI) of the Bladder: MRI is superior to CT for “Local Staging.” It can distinguish between a tumor that is merely on the surface (T1) and one that has invaded the muscle (T2). This distinction is critical because it dictates whether the patient needs a scraping (TURBT) or removal of the bladder (Cystectomy). The VI-RADS scoring system is used to report the likelihood of muscle invasion.
  • PET-CT: Used primarily for advanced cancer to detect distant metastases in lymph nodes, bones, or lungs.

Cystoscopy: The Gold Standard

Cystoscopy is the direct visualization of the bladder interior. Under local anesthesia (gel) or sedation, a thin, flexible tube with a high-definition camera is inserted through the urethra into the bladder. This allows the urologist to inspect the entire mucosal surface.

Blue Light Cystoscopy (Photodynamic Diagnosis – PDD): Standard white-light cystoscopy can miss small, flat tumors (Carcinoma in Situ) that blend in with the bladder’s standard red lining. At Liv Hospital, we utilize Blue Light Cystoscopy (Cysview/Hexvix). Before the procedure, a contrast agent is instilled into the bladder, which is absorbed preferentially by cancer cells. When viewed under a blue light filter, normal tissue appears blue, while cancer cells fluoresce a bright pink/red. This technology significantly improves detection rates and reduces recurrence by ensuring all tumor tissue is seen and removed.

Narrow Band Imaging (NBI): Another optical enhancement technology available on our scopes. It uses specific wavelengths of light to highlight the vascular structure (blood vessels) of the mucosa. Since tumors have chaotic blood supplies, NBI makes them stand out clearly against the background.

Cystoscopy: The Gold Standard

Transurethral Resection of Bladder Tumor (TURBT)

If a mass is seen on cystoscopy, a biopsy is required. In the bladder, the biopsy is usually the treatment as well. TURBT is an endoscopic surgery where a rigid resectoscope is used to shave off the tumor from the bladder wall. Tissue chips are sent to pathology to determine the grade (aggressiveness) and stage (depth) of the cancer. At Liv Hospital, we often use “En-Bloc Resection,” removing the tumor in one piece to provide the pathologist with better architectural information.

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FREQUENTLY ASKED QUESTIONS

Is a cystoscopy painful?

 For men, it can be uncomfortable due to the length of the urethra, but it is generally not “painful.” We use plenty of numbing jelly (lidocaine). For women, the procedure is rapid and usually causes minimal discomfort. Flexible cystoscopes have made this procedure much more tolerable than the rigid instruments of the past.

 A standard CT scan typically looks at the abdomen. A CT Urogram is a specialized protocol that involves acquiring images at specific time points after contrast injection to ensure the dye has traveled down the ureters and filled the bladder, providing a clear view of the urinary lining.

We need to be 100% sure of the type of incontinence. If you have “Urge Incontinence” (bladder spasms) but we perform surgery for “Stress Incontinence” (sling), the surgery will not work and could actually make your symptoms worse. Urodynamics provides the roadmap for the correct surgery.

Not yet. While MRI is excellent for detecting whether cancer has invaded the muscle wall, it cannot detect small, flat surface tumors or subtle inflammation, as the human eye can through a cystoscope. The two tests are complementary, not interchangeable.

 This is a classic dilemma. It suggests that cancer cells are shedding from somewhere, but they aren’t visible in the bladder. They could be from Carcinoma in Situ (invisible flat cancer) or from the upper tract (ureters or kidney lining). In this case, we would perform Blue Light Cystoscopy and a CT Urogram to find the source.

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