6/10/73 Virginian-Pilot article:
New Technique - Cancer-Tumor 'Dryup' Cuts High-Risk Surgery
STANFORD, Calif. (UPI) - A technique of "drying up" certain
cancer tumors without high-risk surgery has been announced by
a Stanford University Linear Accelerator science team.
The development was aided by the creation of a 6x8-inch
"super-conducting" magnet, 20,000 times more powerful than
the magnetic field surrounding the earth.
Dr. Steven J. St. Lorant, head of the team, said Saturday
they are optimistic that the magnet's development will end
high-risk operations on tumors fed by a distinct blood
supply.
"What we needed was a magnet small enough to wheel up to the
patient and powerful enough to do the job from outside the
body," said Dr. Robert W. Rand, a UCLA neurosurgeon.
The magnet is used to place an iron-silicon alloy in blood
vessels which feed cancerous tumors. The idea is an
offshoot of a technique used to cure aneurisms, which are
weakened, ballooning sections of blood vessels.
The original technique called for the placement of ordinary
bar magnets close to the aneurism. The magnets were placed
through such high-risk surgery as drilling holes in the
patient's skull and attracting iron filings inserted into
blood vessels. The filings caused the blood to clot,
strengthening the vessel wall.
The technique recently developed at Stanford will eliminate
the need for placing the magnets through surgery. The clot
cuts off the blood supply to the tumor, causing it to "dry
up."
The first human patient upon whom the new technique was used
was considered a terminal cancer case, Rand said. "The
patient refused surgery, though the cancer on his tongue was
very uncomfortable and made it hard to talk," he added.
However, after the operation, the tumor "literally dried up,
and he was able to speak clearly," Rand said.



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