Dawn Maria Scarzella, M.D.
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Intravesical Therapy for Bladder Cancer:

With intravesical therapy, the doctor puts a liquid drug directly into the bladder, through a small catheter, rather than giving it by mouth or injecting it into a vein. This could be either immunotherapy, which causes the body’s own immune system to attack the cancer cells, or chemotherapy.

Medicines given this way mainly affect the cells lining the inside of the bladder, with little to no effect on cells elsewhere. This means that any cancer cells outside of the bladder lining, including those that have grown deeply into the bladder wall, are not treated. Drugs put into the bladder also can’t reach cancer cells in the kidneys, ureters, and urethra, or those that have spread to other organs.

For this reason, intravesical therapy is used only for non-invasive or minimally invasive (stage I) bladder cancers.

Intravesical Immunotherapy: 



Bacillus Calmette-Guerin therapy: Bacillus Calmette-Guerin (BCG) is the most effective intravesical immunotherapy for treating early-stage bladder cancer. BCG is a bacterium that is related to the germ that causes tuberculosis (TB), but it does not usually cause serious disease. BCG is put directly into the bladder through a catheter. The body’s immune system cells are attracted to the bladder and activated by BCG, which in turn affects the bladder cancer cells. Treatment is usually started a few weeks after a transurethral resection of the tumor and is given once a week for 6 weeks. Sometimes long-term maintenance BCG therapy is given.

Treatment with BCG can cause symptoms that feel like having the flu, such as fever, chills, and fatigue. It can also cause a burning feeling in the bladder. Rarely, BCG can cause a high fever that is a sign of a possible infection. In such cases, you should see a doctor right away. 

Interferon: Interferons are substances naturally made by several types of cells in the body that stimulate the immune system. They can also be made in the lab and given as medicine
. Interferon-alpha is the type most often used to treat cancer. It can be helpful in the intravesical treatment of bladder cancer.

Possible side effects include muscle aches, bone pain, headaches, problems with thinking and concentration, fatigue, nausea, and vomiting. These problems are usually temporary and improve after treatment is completed. Other drugs may be given along with interferon to lessen these side effects.

Intravesical Chemotherapy:


For this treatment, chemotherapy (chemo) drugs are put directly into the bladder through a catheter. These drugs kill actively growing cancer cells. Many of these same drugs can also be given systemically (usually into a vein) to treat more advanced stages of bladder cancer.

Mitomycin and thiotepa are the drugs used most often for intravesical chemotherapy. Other drugs that can be used include valrubicin, doxorubicin, and gemcitabine
.  

A major advantage of giving chemo directly into the bladder instead of injecting it into the bloodstream is that the drugs do not reach other systems of the body. This helps people avoid many of the side effects that can occur with systemic chemotherapy.



Prevent Disease Recurrence

BCG Intravesical Immunotherapy

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