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But Mr. Joyce's
hearing deteriorated even further, and about three years ago he went
to another physician. This time, the MRI showed a suspicious mass, which
was diagnosed as an acoustic neuroma. Also called a vestibular schwannoma,
this is a benign, slow-growing tumor located on the eighth cranial nerve,
which leads from the brain to the inner ear. "I was told that I
had three options: open brain surgery, stereotactic radiosurgery, or
do nothing," says Mr. Joyce, now 67. "I was then referred
to a neurosurgeon at University Hospital, Dr. Michael Schulder. When
I went to see him, he explained that I only had two choices, and doing
nothing wasn't one of them." Although not a malignancy, an acoustic
neuroma can be quite serious. As the tumor grows, it can press on a
nerve that controls facial sensation and eventually, the brainstem and
cerebellum. Mr. Joyce opted
for stereotactic radiosurgery (SRS), in which beams of radiation are
precisely delivered to the tumor site, avoiding adjacent healthy tissue.
"I'm a very active person, and I was concerned about how the treatment
would affect me," he says. "Dr. Schulder said I'd be able
to do the same things after the SRS that I did before, and to my surprise,
he was right." It has been three years since Mr. Joyce's acoustic
neuroma was successfully treated, and although he still has a hearing
loss, he has passed three rigorous physicals and from time to time,
works at sea. Without technological
advances such as stereotactic radiosurgery, Mr. Joyce and many other
brain tumor patients might not have as positive an outcome. Brain tumors
are still very rare; their treatment can be lengthy and difficult, and
some are deadly, but there has been progress made in neurosurgery, neurooncology,
neuroradiology, and imaging, with more to come. "Unquestionably,
the treatment of brain tumors requires a multidisciplinary approach,"
says Dr. Schulder, associate professor of neurological surgery at New
Jersey Medical School , who is director of the Center for Image-Guided
Surgery and of the Stereotactic Radiosurgery Center at University Hospital's
Brain Tumor Program. "Innovations within each specialty bring new
promise for the patient and take brain tumor treatment to a new level." Take imaging, for
example. New Jersey Medical School's University Heights Advanced Imaging
Center is one of seven facilities in the country using a powerful MRI
scanner with a field strength of 3 Tesla, which enables an earlier and
more precise diagnosis of brain tumors. Magnetic resonance spectroscopy
(MRS), a non-invasive analytical technique, can be used to study metabolic
changes in the brain and differentiate between types of tumors. And
computed tomographic (CT) angiography, which takes X-rays of the brain's
blood vessels, can produce information that is very important when planning
surgery - but in a noninvasive manner, a big change from "conventional"
techniques using catheters inserted via the groin. While imaging is
key in the pre-treatment stages, recent inroads in technology have given
it a whole new role in the operating room. "The neurosurgeon no
longer has to rely on external measurement as a guide during surgery,"
says Dr. Schulder. "Our operating room-based intraoperative MRI
system, the
PoleStar N-10, provides real-time imaging of the brain. This enables
the neurosurgeon to make any necessary adjustments to the surgical approach
while the patient is on the operating table." Even advances in
neuroanesthesiology contribute to the patient's well being. Safer pulseoximetry,
the non-invasive monitoring of oxygen/carbon dioxide levels, can be
critical to patient outcomes, he notes. The brain is a complex
structure, making navigational tools indispensable to the neurosurgeon.
A metal frame affixed to the patient's head serves as a reference point
during stereotactic surgery, which combines imaging techniques with
sophisticated computer technology to create a three-dimensional map
of the brain. Frameless stereotactic surgery also maps the brain, but
using special wands instead of the frame. "Both provide exquisite
details and crucial anatomical information about the brain," says
Dr. Schulder. "Functional image-guided surgery, which incorporates
frameless stereotactic surgery with functional MRI scanning, goes a
step further and locates and references the 'eloquent' areas of the
brain that control speech, movement, and other important functions." Then there's radiation
and chemotherapy. Radiation can be used alone to treat a brain tumor,
together with chemotherapy, or following surgery to curtail a tumor's
growth or reduce its size. One concern with traditional radiation is
that the beams can reach healthy tissue as well as the cancer cells.
That's where stereotactic radiosurgery, with the precise delivery of
radiation to a specific site, becomes beneficial. Not only can healthy
tissue be avoided, but the beams can be directed to otherwise inaccessible
tumors. Additionally, University Hospital has been a test site for GliaSite®,
which delivers radiation through a balloon catheter to the space left
after removal of a brain tumor. Newer chemotherapeutic
agents, like PCV and temazoliade, can slow the growth of brain tumors.
University Hospital is leading a multicenter study of Gliadel®,
a chemotherapeutic wafer, along with radiation therapy and radiosurgery
for patients with newly diagnosed malignant gliomas.
On December 31,
1993, Mr. Pinkham came home from work and soon had a grand mal seizure.
In the course of examining him, doctors found a meningioma, a brain
tumor that is slow-growing and usually benign. "The neurosurgeons
at a local hospital removed the tumor, but told me they saw something
else they couldn't get to. Because I had already been on the operating
table longer than anticipated, they closed me up." For more information on the treatment of brain tumors, call the Neurological Institute of New Jersey at (973) 972-2323 or visit our web site at: www.TheUniversityHospital.com/braintumor.
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