Logo of Phnom Penh Post newspaper Phnom Penh Post - Dinosaurs got cancer too, new research report reveals



Dinosaurs got cancer too, new research report reveals

Dinosaurs got cancer too, new research report reveals

Dinosaurs loom in the imagination as forces of nature, but a new study that identifies the first known case of cancer in the creatures shows they suffered from the debilitating disease too.

A badly malformed Centrosaurus leg bone unearthed in the Alberta, Canada badlands in 1989 had originally been thought by palaeontologists to be a healed fracture.

But a fresh examination of the growth under a microscope and using a technique also employed in human cancer care determined it was actually a malignant tumour.

Study co-author Mark Crowther said: “The cancer discovery makes dinosaurs more real.

“We often think of them as mythical creatures, robust and stomping around, but [the diagnosis shows] they suffered from diseases just like people.”

The findings were published in the August issue of The Lancet Oncology.

Most cancers occur in soft tissues, which are not well-preserved in fossil records, noted Crowther, a dinosaur enthusiast and chair of McMaster University’s medical faculty in Canada.

He said: “Oddly enough, under a microscope, it looked a lot like human Osteosarcoma.

“It’s fascinating that this cancer existed tens of millions of years ago and still exists today.”

Osteosarcoma is an aggressive bone cancer that still afflicts about three out of one million people each year.

In this horned herbivore that lived 76 million to 77 million years ago it had metastasised and likely hobbled the giant lizard, the researchers said in the study.

But neither late-stage cancer nor a predator looking to make a meal out of slow and weak prey is believed to have killed it.

Because its bones were discovered with more than 100 others from the same herd, the researchers said, it’s more likely they all died in a sudden disaster such as a flood, and that prior to this catastrophe the herd protected the lame dinosaur, extending its life.

Lead researchers Crowther and David Evans, curator of vertebrate palaeontology at the Royal Ontario Museum in Toronto, and their team sifted through hundreds of samples of abnormal bones at the Royal Tyrrell Museum in Drumheller, Alberta, to find the bone with a tumour, which is about the size of an apple.

The team also used high-resolution computed tomography (CT) scans, a multidisciplinary diagnostic technique used in human cancer care.

Crowther said dinosaurs would probably have been at higher risk of Osteosarcoma, which affects youths with fast-growing bones because they grew very quickly and big.

He said: “In terms of the biology of cancer . . . you often hear about environmental, dietary and other causes of cancer. Finding a case from more than 75 million years ago you realise it’s just a part of life.

“You have an animal that surely wasn’t smoking [a leading cause of cancer in humans] and so it shows that cancer is not a recent invention and that it’s not exclusively linked to our environment.”

MOST VIEWED

  • First Cambodian woman graduates from Japan’s NDA military academy

    A few years ago, Meach Sithyka Jessica became the first-ever Cambodian woman to graduate from the US Military Academy at West Point, and since then her courage and determination has served as an inspiration for other Cambodian women. Similarly, Ly Chansocheata became the first Cambodian

  • Construction begins on $1.5B Kampot seaport

    The International Multi-Purpose Logistics and Port Centre, principally invested by Kampot Logistics and Port Co Ltd and projected to cost $1.5 billion, has officially broken ground in Bokor town, Kampot province. The multi-purpose logistics and port centre, located in Prek Tnaot commune, will be built on

  • Cambodia eyes key role in electronics, auto hubs in SEA

    Two roadmaps, part of the LDC’s economic diversification plan, were designed to see it through its migration process, but experts say the journey might be arduous, particularly in the presence of two established hubs in the region By 2028, Cambodia hopes to have exited the

  • Hun Neng, lawmaker and PM’s brother, passes away aged 72

    Hun Neng, chairman of the 4th Commission of the National Assembly, has passed away from heart disease at the age of 72 on the afternoon of May 5, according to the Ministry of Information. Hun Neng is the older brother of Prime Minister Hun Sen, and was

  • CCC team off on US business trip

    The Kingdom’s leading economists and private sector representatives have called on the US to renew its tax preferential status for Cambodian exports, as a Cambodia Chamber of Commerce (CCC) delegation departed for a weeklong business visit to the US, where they will meet with

  • PM meets with US business giants

    Prime Minister Hun Sen has met with a number of major US companies who have expressed interest in investing in Cambodia, in a meeting convened by the US-ASEAN Business Council (US-ABC). A delegation of companies – including Amazon, Meta, Chevron, ConocoPhillips, ExxonMobil, Ford, Visa and Pernod