Understanding Urinary Diversion Surgery After Bladder Cancer Treatment

What is Urinary Diversion Surgery?

Urinary diversion surgery is a critical procedure performed after the removal of the bladder, often due to bladder cancer. This surgery creates a new pathway for urine to exit the body, as the natural bladder can no longer perform its function. The American Cancer Society estimates that in 2023, over 82,000 new cases of bladder cancer will be diagnosed in the United States, and surgery is a common treatment. Understanding the different types of urinary diversion is essential for patients navigating this complex treatment journey.

Why is Urinary Diversion Necessary?

When the bladder is removed, typically through a procedure called a radical cystectomy, the body needs an alternative way to store and eliminate urine. Invasive bladder cancer, which has spread into the bladder wall muscles, often necessitates the complete removal of the bladder. Without a functional bladder, urine would not be able to be stored or expelled from the body, leading to severe health complications. Urinary diversion surgery addresses this by constructing a new route for urine flow.

Types of Urinary Diversion

Urinary diversion surgeries are broadly categorized into two main types: incontinent and continent diversions. The choice between these depends on various individual factors, including the patient's overall health, physical and cognitive function, and the presence of other medical conditions.

Incontinent Urinary Diversion

In an incontinent urinary diversion, the patient does not have voluntary control over urination. Urine continuously flows from an opening in the abdomen, known as a stoma, into an external collection pouch worn by the patient. The most common type of incontinent urinary diversion is the ileal conduit diversion.

Ileal Conduit Diversion

This procedure involves using a segment of the small intestine, typically 6 to 8 inches long, to create a channel. This segment, called an ileal conduit, is connected to the ureters (the tubes that carry urine from the kidneys to the bladder). One end of the ileal conduit is brought out to the surface of the abdomen, forming a stoma. Urine then drains from the kidneys, through the ureters, into the ileal conduit, and out through the stoma into a collection bag. This is generally considered the simplest type of urinary diversion, both in terms of the surgical procedure and its ongoing management. It may be recommended for individuals who are older or have reduced physical or cognitive function, as it requires less active management from the patient.

Continent Urinary Diversion

Continent urinary diversion offers the patient some degree of control over when they urinate. In this type of surgery, an internal pouch is created within the body to store urine. The patient can then drain this pouch themselves at regular intervals as it fills, or in some cases, the pouch is designed to empty through a stoma with a valve mechanism.

Neobladder

A neobladder is a type of continent urinary diversion where a new bladder is constructed from a segment of the small intestine. This new bladder is surgically connected to the ureters and the urethra. The goal is for the patient to be able to urinate naturally, though some patients may still require intermittent catheterization to empty the neobladder completely. This option aims to restore a more natural urinary function.

Continent Cutaneous Diversion

Another form of continent urinary diversion is the continent cutaneous diversion. This involves creating an internal pouch from a segment of the intestine, similar to a neobladder, but it is connected to a stoma on the abdomen. However, unlike an ileal conduit, this stoma has a one-way valve that prevents urine from continuously leaking. The patient can then insert a catheter through the stoma to drain the pouch when it becomes full.

Factors Influencing the Choice of Diversion

While most patients are candidates for all three types of urinary diversion, several individual factors play a role in the decision-making process:

• Physical and Cognitive Function: The patient's ability to manage the chosen diversion method is paramount.
• Pre-existing Medical Conditions: Conditions affecting the urinary tract, liver, or bowel can influence the suitability of certain diversion types.
• Patient Preference and Lifestyle: The patient's personal preferences and lifestyle needs are also considered.

For instance, the ileal conduit, being the simplest, might be preferred for individuals with lower physical or cognitive capabilities. Conversely, a neobladder might be chosen by someone seeking to regain a more natural urinary function, provided they have the capacity to manage it.

Quality of Life After Urinary Diversion

Research suggests that individuals undergoing urinary diversion surgery can maintain a good quality of life. A 2022 study indicated that while physical function scores might initially decrease in the first six months post-surgery, they tend to stabilize or return to baseline levels. Importantly, overall quality of life often improves from the baseline by the six-month mark. Feeling well-informed about the surgical options has also been linked to fewer regrets, regardless of the specific diversion method chosen, highlighting the importance of comprehensive patient education.

When to Consult a Doctor

If you or a loved one has been diagnosed with bladder cancer and is facing the prospect of bladder removal, it is crucial to have an in-depth discussion with your urologist or oncologist. They can explain the risks and benefits of each type of urinary diversion surgery, considering your specific health status and needs. Don't hesitate to ask questions and seek clarification to make an informed decision about your treatment path.