Researchers at the University of Texas at Austin have developed a hand-held surgical “pen” that can analyze tissue samples and tell a surgeon if they are cancerous in just a few seconds, a report from Medgadget said. During surgery to remove a tumor, surgeons need to know if they have removed the entire tumor margins, as leaving just a small piece of neoplasm could mean that it grows back. Often the tumor looks very similar to healthy tissue, making it…
