Summer 2007



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Surgery Without the Knife
Hitting the Target With Novalis®

Photo of Joseph Pristas is back playing golf after
undergoing Novalis Shaped Beam Surgery
to treat his brain tumor.
Joseph Pristas is back playing golf after undergoing Novalis Shaped Beam Surgery to treat his brain tumor.
Two years ago, 77-year-old Wellington resident Joseph Pristas was having breakfast with his wife when, suddenly, he couldn't move or talk. He thought he was having a stroke.

Tests showed that his symptoms were caused by a tumor located at the front of the brain, called a meningioma. Although most meningiomas are noncancerous, they can grow large enough to affect the brain's functioning, causing disability and even death.

At that time, neurosurgeon Amos Dare, MD, performed a craniotomy (surgery of the brain) to remove the meningioma. Although Dr. Dare was able to remove most of the tumor, a small part of it had to remain because it was located in an area too delicate to navigate further.

"I was told that there was a possibility that the tumor could start growing again and cause complications," Joseph recalls, "so I underwent periodic testing to monitor its growth. Last December, follow-up tests showed that the tumor had, once again, started to grow.

"Dr. Dare advised me that a second craniotomy wasn't a good option because of my age and the now much smaller size of the growth, and he recommended that I undergo a new noninvasive radiation therapy procedure called Novalis Shaped Beam Surgery, available at The Regional Cancer Center at Wellington."

Before deciding on this treatment, Joseph researched other currently available technologies and interviewed physicians at other facilities. He was impressed to learn of the precision of Novalis radiosurgery. When he was informed that he would only need one treatment versus up to 20 treatments that would be required with other technologies, he decided that Novalis was the best option for him.

"When someone is going to do something to your brain, you want to make the right choice," Joseph says. "My doctor told me that The Regional Cancer Center at Wellington was an excellent place to have my procedure done, and I felt confident that I was in good hands."

Illustration of how Novalis works
Novalis delivers the radiation dose to the above tumor (in red) in five dynamic arcs, while continuously shaping the radiation beams to match the size and shape of the tumor.
The Novalis Procedure
Last February, Dr. Dare and chief radiation oncologist Kishore K. Dass, MD, worked as a team to plan and perform his treatment. Joseph underwent a magnetic resonance imaging (MRI) scan two days before surgery and a computed tomography scan the day of the procedure. Doctors used the imaging studies combined with Novalis' advanced computer software to calculate the ideal access points of the tumor and create a customized treatment plan.

During the procedure, Joseph wore a halo-type device around his head to keep him precisely aligned at all times. The Novalis machine then rotated around him, delivering continuous radiation while changing the shape of the beam to match the exact contour of the tumor from every angle.

"I didn't feel any discomfort," Joseph says. "I was amazed. I went home after the procedure and even went out to dinner with my wife that night."

Since his treatment, he says he's back to all the activities he enjoys — playing golf, mowing the lawn and going out with his wife. Two months after the procedure, a follow-up MRI brought some good news from his doctors: The tumor had stopped growing.

"The doctors say the tumor should die within a year," Joseph says. "I have every confidence that the tumor is doing what it's supposed to do. They say I don't need to worry about the tumor growing back or needing another surgery. It's tremendous that this type of technology is available at The Regional Cancer Center at Wellington, so close to home. That's great news for anyone needing treatment living in this area."

For more information, please call 561-793-6500.

Photo of Kishore K. Dass, MD
Kishore K. Dass, MD, is a board-certified radiation oncologist and medical director of The Regional Cancer Center. Dr. Dass is a graduate of the Loyola University Chicago Stritch School of Medicine and an alumnus of the Cleveland Clinic Foundation, Cleveland, Ohio, where he was instrumental in the development of stereotactic radiosurgery.

The Novalis® Advantage
The Regional Cancer Center at Wellington is one of a select group of medical centers nationwide to offer Novalis Shaped Beam Surgery, one of the most advanced radiation therapy systems available today for delivery of noninvasive stereotactic radiosurgery or radiotherapy.

With Novalis treatment, a tumor or lesion can be targeted with such precision that the radiation oncologist can apply a higher dose of radiation to destroy the tumor while nearby vital structures receive only a fraction of the dose.

How It Works
Novalis' sophisticated software calculates the ideal angles of the radiation beams to best treat the targeted area. A micromultileaf collimator shapes the radiation beams to precisely match the size and shape of the tumor from all angles.

During treatment, Novalis steadily moves around the patient's body so that radiation beams penetrate the tumor from different angles, ensuring the tumor receives the fully prescribed dose of radiation while healthy surrounding tissue is spared.

Benefits
Novalis treatment is noninvasive with only minor incisions for cranial halo procedures. Treatment is virtually painless with the patient remaining awake throughout. In most cases, the procedure is performed on an outpatient basis. Where applicable, Novalis allows a complete treatment session to take place in a single day, and the actual treatment time lasts only minutes.

Other Indications for Novalis
Other conditions that can be treated with Novalis include arteriovenous malformations (a type of vascular disorder) of the brain, functional brain disorders (e.g., trigeminal neuralgia/tic douloureux), acoustic neuromas and pituitary adenomas.

If you have been diagnosed with a benign or malignant tumor of the brain, spine, prostate, liver, lung or other delicate area, Novalis Shaped Beam Surgery might be right for you. For more information, please call The Regional Cancer Center at Wellington at 561-793-6500.

Wellington Regional Medical Center,
10101 Forest Hill Blvd.
Wellington, FL 33414
(561) 798-8500