Experimental 'iKnife' Tells Surgeon Whether Tissue Is Cancerous

But more research needed to see if device works in everyday practice, expert says

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"People are only now asking if they make enough of a difference to justify the cost of the robot," he said. "We can't get into that situation again. We need to have scientific research before we have widespread adoption of new technology."

More information

The American Cancer society explains how a cancer diagnosis is made.

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