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Doctors diagnose advanced cancer—in a dinosaur

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Gretchen VogelThis deformed bone is the first clear example of a malignant tumor diagnosed in a dinosaur. The partial fibula—a bone from the lower leg—belonged to a horned, plant-eating Centrosaurus that lived roughly 76 million years ago in what is now Dinosaur Park in southern Alberta in Canada.Paleontologists initially thought the bone’s strange shape was due to a fracture that hadn’t healed cleanly.

But a new study, published today in The Lancet Oncology, compares the internal structure of the fossil (above) with a bone tumor from a human patient to seek a diagnosis.

The conclusion: The dinosaur suffered from osteosarcoma, a cancer that, in humans, primarily attacks teens and young adults.

Read more on sciencemag.org
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