WEDNESDAY, Sept. 6, 2017 (HealthDay News) — A new “cancer pen” promises to help surgeons immediately detect and completely remove cancerous tumor tissue, without having to send samples off to a lab for testing while the patient languishes on the table.

The MasSpec Pen is a hand-held device that allows doctors to test in real-time whether tissue is cancerous or not, delivering results in about 10 seconds, researchers report.

The pen will make it easier to surgically clear out all the…

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