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A new machine believed to diagnose breast cancer faster, more comfortably and less expensively is being tested by Michigan State University radiologists and at 10 other sites in the nation.

The device, called the mammotest, more precisely locates suspicious lesions detected by a conventional mammogram X-ray. Results usually are ready within a day -- much sooner than for a conventional mammogram.

Samples of suspicious cells then can be removed with a tiny needle for biopsy, said Dr. E. James Potchen, chairman of MSU's radiology department. The mammotest, developed by Swedish researchers, may make most surgical biopsies obsolete.

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