Treatment for Bladder Cancer 2011-2012

Treatment for Bladder Cancer

Treatment for bladder cancer depends on the stage of the disease, the type of cancer, and the patient's age and overall health. Options include surgery, chemotherapy, radiation, and immunotherapy. In some cases, treatments are combined (e.g., surgery or radiation and chemotherapy, preoperative radiation).

Bladder Cancer Surgery

The type of surgery used to treat bladder cancer depends on the stage of the disease. In early bladder cancer, the tumor may be removed (resected) using instruments inserted through the urethra (transurethral resection).

Bladder cancer that has spread to surrounding tissue (e.g., Stage T2 tumors, Stage T3a tumors) usually requires partial or radical removal of the bladder (cystectomy). Radical cystectomy also involves the removal of nearby lymph nodes and may require a urostomy (opening in the abdomen created for the discharge of urine). Complications include infection, urinary stones, and urine blockages. Newer surgical methods may eliminate the need for an external urinary appliance.

In men, the standard surgical procedure is a cystoprostatectomy (removal of the bladder and prostate) with pelvic lymphadenectomy (removal of the lymph nodes within the hip cavity). The seminal vesicles (semen-conducting tubes) also may be removed. In some cases, this can be performed in a manner that preserves sexual function.

In women with T2 to T3a tumors, the standard surgical procedure is radical cystectomy (removal of the bladder and surrounding organs) with pelvic lymphadenectomy. Radical cystectomy in women also involves removal of the uterus (womb), ovaries, fallopian tubes, anterior vaginal wall (front of the birth canal), and urethra (tube that carries urine from the bladder out of the body). Recent studies have shown some support for modifying this approach to help conserve sexual function.

Segmental cystectomy (partial removal of the bladder), which is a bladder-preserving procedure, may be used in some cases (e.g., patients with squamous cell carcinomas or adenocarcinomas that arise high in the bladder dome). When segmental cystectomy is performed, it may be preceded by radiation therapy in high-risk patients.

Urinary Tract Diversion

Until recently, most bladder cancer patients who underwent cystectomy (bladder removal) required an ostomy (surgical creation of an artificial opening) and an external bag to collect urine. Newer reconstructive surgical methods include the continent urinary reservoir, the neobladder, and the ileal conduit.

The continent urinary reservoir is a urinary diversion technique that involves using a piece of the colon (large intestine) to form an internal pouch to store urine. The pouch is specially refashioned to prevent back-up of urine into the ureters (tubes that carry urine out of the kidneys and into the bladder) and kidneys. The patient drains the pouch with a catheter several times a day, and the stoma site is easily concealed by a band aid.

The neobladder procedure involves suturing a similar intestinal pouch to the urethra so the patient is able to urinate as before, without the need for a stoma. In many cases, there is no sensation to void, but some patients experience abdominal cramping as the neobladder fills.

Complications of the continent urinary reservoir and neobladder include bowel (intestine) obstruction, blood clots, pneumonia (lung inflammation), ureteral reflux (back-flow), and ureteral blockage.

The ileal conduit is a urinary channel that is surgically created from a small piece of the patient's bowel. During this procedure, the ureters are attached to one end of the bowel segment and the other end is brought out of the surface of the body to make a stoma. An external, urine-collecting bag is attached to the stoma and is worn at all times.

Complications of the ileal conduit procedure include bowel obstruction, urinary tract infection (UTI), blood clots, pneumonia, upper urinary tract damage, and skin breakdown around the stoma.

Chemotherapy to Treat Bladder Cancer

Chemotherapy

Chemotherapy is a systemic treatment (i.e., affects the entiry body) in which drugs are used to destroy cancer cells. Chemotherapy drugs are administered orally, intravenously (through a vein), or in early bladder cancer, may be infused into the bladder through the urethra (called intravesical chemotherapy). Chemotherapy can be administered before surgery (neoadjuvant therapy) or after surgery (adjuvant therapy).

Drugs commonly used to treat bladder cancer include thiotepa (Thioplex®), mitomycin, and doxorubicin (Rubex®). Intravesical chemotherapy (e.g., valrubicin [Valstar®]) may be used to treat early bladder cancer as an alternative to surgery (e.g., bladder removal [cystectomy]). Side effects of chemotherapy drugs used to treat blader cancer can be severe and include the following:

• Abdominal pain
• Anemia
• Bladder irritation
• Blurred vision
• Excessive bleeding or bruising
• Fatigue
• Headache
• Infection
• Loss of appetite
• Nausea and vomiting
• Weakness

Radiation Therapy to Treat Bladder Cancer, Other Bladder Cancer Treatments

Radiation Therapy

Radiation uses high-energy x-rays to destroy cancer cells. External beam radiation is emitted from a machine outside the body and internal radiation is emitted from radioactive "seeds" implanted into the tumor. Either type of radiation therapy may be used after surgery to destroy cancer cells that may remain. Radiation therapy is also used to relieve symptoms (called palliative treatment) of advanced bladder.

Side effects of radiation therapy for bladder cancer include inflammation of the rectum (proctitis), incontinence, skin irritation, hematuria, fibrosis (buildup of fibrous tissue), and impotence (erectile dysfunction).

Immunotherapy to Treat Bladder Cancer

Immunotherapy, also called biological therapy, may be used in some cases of superficial bladder cancer. This treatment is used to enhance the immune system's ability to fight disease. A vaccine derived from the bacteria that causes tuberculosis (BCG) is infused through the urethra into the bladder, once a week for 6 weeks to stimulate the immune system to destroy cancer cells. Sometimes BCG is used with interferon.

Side effects include inflammation of the bladder (cystitis), inflammation of the prostate (prostatitis), and flu-like symptoms. High fever (over 101.5°F) may indicate that the bacteria have entered the bloodstream (called bacteremia). This condition is life threatening and requires antibiotic treatment. Immunotherapy is not used in patients with gross hematuria (blood in urine).

Photodynamic therapy is a new treatment for early bladder cancer. It involves administering drugs to make cancer cells more sensitive to light and then shining a special light onto the bladder. This treatment is being studied in clinical trials.

Bladder Cancer Follow-Up

Bladder cancer has a high rate of recurrence. Urine cytology and cystoscopy are performed every 3 months for 2 years, every 6 months for the next 2 years, and then yearly.