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Pet Detective: A Dog that Sniffs Out Colon Cancer

In a new study, a Labrador retriever has been trained to detect colon cancer nearly as accurately as a colonoscopy. The dog was given breath and stool samples of more than 300 patients and gave back an accurate diagnosis 98 percent of the time.

In fact, the dog was particularly good at spotting early stage cancer, and could tell polyps from malignancies -- something colonoscopies cannot do.

Time Magazine reports:

“Although there's not much hope for the routine use of scent dogs in cancer screening -- they're too expensive, for one thing -- the current findings suggest that other noninvasive screening measures could be developed to pick up the same scent.”

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