Archaeologists
discover earliest complete example of a human with cancer, from 3,000 years ago
Archaeologists have
found the oldest complete example in the world of a human with metastatic
cancer in a 3,000 year-old skeleton. The skeleton of the young adult male was
found in a tomb in modern Sudan in 2013 and dates back to 1200BC. Analysis has
revealed evidence of metastatic carcinoma, cancer which has spread to other
parts of the body from where it started, from a malignant soft-tissue tumour
spread across large areas of the body, making it the oldest convincing complete
example of metastatic cancer in the archaeological record.
Archaeologists have found the oldest complete
example in the world of a human with metastatic cancer in a 3,000 year-old
skeleton.
The skeleton of the young adult male was found by a Durham
University PhD student in a tomb in modern Sudan in 2013 and dates back to
1200BC.
Analysis has revealed evidence of metastatic carcinoma, cancer
which has spread to other parts of the body from where it started, from a
malignant soft-tissue tumour spread across large areas of the body, making it
the oldest convincing complete example of metastatic cancer in the
archaeological record.
The researchers from Durham University and the British Museum
say the discovery will help to explore underlying causes of cancer in ancient
populations and provide insights into the evolution of cancer in the past.
Ancient DNA analysis of skeletons and mummies with evidence of cancer can be
used to detect mutations in specific genes that are known to be associated with
particular types of cancer.
Even though cancer is one of the world's leading causes of death
today, it remains almost absent from the archaeological record compared to
other pathological conditions, giving rise to the conclusion that the disease
is mainly a product of modern living and increased longevity. These findings
suggest that cancer is not only a modern disease but was already present in the
Nile Valley in ancient times.
Lead author, Michaela Binder, a PhD student in the Department of
Archaeology at Durham University, excavated and examined the skeleton. She
said: "Very little is known about the antiquity, epidemiology and
evolution of cancer in past human populations apart from some textual
references and a small number of skeletons with signs of cancer.
"Insights gained from archaeological human remains like
these can really help us to understand the evolution and history of modern
diseases.
"Our analysis showed that the shape of the small lesions on
the bones can only have been caused by a soft tissue cancer even though the
exact origin is impossible to determine through the bones alone."
The skeleton is of an adult male estimated to be between 25-35
years old when he died and was found at the archaeological site of Amara West
in northern Sudan, situated on the Nile, 750km downstream of the country's
modern capital Khartoum. It was buried extended on his back, within a badly
deteriorated painted wooden coffin, and provided with a glazed faience amulet
as a grave good.
Previously, there has only been one convincing, and two
tentative, examples of metastatic cancer predating the 1st millennium BC
reported in human remains. However, because the remains derived from early 20th
century excavations, only the skulls were retained, thus making a full
re-analysis of each skeleton, to generate differential (possible) diagnoses,
impossible.
Co-author, Dr Neal Spencer from the Department of Ancient Egypt
and Sudan at the British Museum, said: "From footprints left on wet mud
floors, to the healed fractures of many ancient inhabitants, Amara West offers
a unique insight into what it was like to live there -- and die -- in
Egyptian-ruled Upper Nubia 3200 years ago."
The skeleton was examined by experts at Durham University and
the British Museum using radiography and a scanning electron microscope (SEM)
which resulted in clear imaging of the lesions on the bones. It showed cancer
metastases on the collar bones, shoulder blades, upper arms, vertebrae, ribs,
pelvis and thigh bones.
The cause of the cancer can only be speculative but the
researchers say it could be as a result of environmental carcinogens such as
smoke from wood fires, through genetic factors, or from infectious diseases
such as schistosomiasis which is caused by parasites.
They say that an underlying schistosomiasis infection seems a
plausible explanation for the cancer in this individual as the disease had
plagued inhabitants of Egypt and Nubia since at least 1500BC, and is now recognised
as a cause of bladder cancer and breast cancer in men.
Michaela Binder added: "Through taking an evolutionary
approach to cancer, information from ancient human remains may prove a vital
element in finding ways to address one of the world's major health
problems."
The tomb, where the skeleton was found, appears to have been
used for high-status individuals from the town, but not the ruling elite, based
on the tomb architecture and aspects of funerary ritual.
The tomb's architecture is evidence of a hybrid culture blending
Pharaonic elements (burial goods, painted coffins) with Nubian culture (a low
mound to mark the tomb).
The well preserved pottery recovered from the tomb provides a
date within the 20th Dynasty (1187-1064BC), a period when Egypt ruled Upper
Nubia, endured conflicts with Libya and while pharaohs such as Ramses III were
being buried in the Valley of the Kings.
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