Dogs can detect prostrate cancer
A team of researchers led by Jean-Nicolas Cornu, MD, of Tenon Hospital, trained a Belgian Malinois to detect urine of patients suffering from prostrate cancer, and then distinguish between samples of patients who had cancer and those who did not.
For those who do not know, Belgian Malinois is a dog of shepherd breed that is commonly used to identify bombs or drugs.
<strong>Dog did not miss single cancerous sample</strong>
After a year of training, the dog was put through a test. It was given six samples of urine out of which only one had prostrate cancer.
The process was repeated 11 times, making the total number of samples that the dog had to go through 66. Out of these 66 samples, the dog correctly identified 63 samples, and got only 3 wrong.
It is important to note here that the dog did not miss a single sample of urine which came from a patient with prostrate cancer. It simply mistook 3 healthy samples for cancerous ones.
Surprisingly, one of the healthy samples actually turned out to be cancerous when it was tested later with a biopsy.
<strong>More effective than any other test equipment</strong>
The findings clearly showed that dogs were more effective at detecting prostrate cancer than any man-made equipment. The low false-positive rate "is pretty spectacular," Smith says.
But before you begin imagining that clinics will now use dogs to test for prostrate cancer, remember that the entire process of training and keeping a dog is prohibitively expensive.
What researchers aim to do is to identify the chemical that the dog is sensing and to then develop some kind of equipment which can identify this chemical compound.
Questions and Answers
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