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13 September 2022 | Story Prof Jan du Plessis and André Damons | Photo Istock
Prof_Jan-DuPlessis
Prof Jan du Plessis is the Head of the Paediatric Oncology Unit at the University of the Free State (UFS).

A post on Facebook by a bereaved parent of a young child who tragically died of cancer that reads: “I want my old life back, the one with my child in it”, is unfortunately still the sad reality that many families face, even though in developed countries the overall survival rate for childhood cancer is now over 80%. For some types of cancer and in developing countries such as South Africa, the rate is much lower. There are some childhood cancers for which there is no treatment and which are uniformly fatal. 

Another harsh reality, according to Prof Jan du Plessis, Head of the Paediatric Oncology Unit at the University of the Free State (UFS), is that some of those who do survive cancer can go on to suffer long-term (sometimes life-long) health issues as a result of their treatment. Almost all cancer treatments used in children today were actually developed for adults. Most of these treatments (such as chemotherapy or radiotherapy) target all fast-growing cells (not just cancer cells), and this leads to harsh side-effects in young, growing bodies. 

Prof du Plessis says the need for more effective and safer treatments for children is urgent. Despite better outcomes for children diagnosed with cancer, some do not survive. Currently, between 800 to a 1 000 South African children are diagnosed with cancer annually. However, it’s estimated that half of the children with cancer in South Africa are never diagnosed, according to the Cancer Association of South Africa (CANSA)

Different types of Childhood Cancer

Children can get many different types of cancer. Some of the most common childhood cancers are:
• Leukaemia – cancer of the blood and bone marrow, which is the most common childhood cancer.
• Brain cancer – cancer that grows in the brain which is the second most common childhood cancer. It kills more children than any other type of cancer.
• Neuroblastoma & Nephroblastoma – the most common solid tumours diagnosed in children under the age of five.
• Sarcoma – a cancer that grows in the bones and connective tissues of the body.
• Lymphoma – cancer that develops in the lymphatic system.

St Siluan Warning Signs of Childhood Cancer:

According to CHOC Childhood Cancer Foundation South Africa, research showed that an ongoing awareness campaign on the early warning signs was needed to improve the rate of referrals at an earlier stage of the disease. It is for this reason that 15 February (International Childhood Cancer Day), and the month of September, that marks Childhood Cancer Awareness Month, are important for awareness. 

“It is not possible to prevent cancer in children, but significant improvements can be made in their lives by detecting cancer early and avoiding delays in care. A correct diagnosis is important to treat children with cancer because each cancer involves a specific treatment regimen that may include surgery, radiotherapy, and chemotherapy.

“To improve early diagnosis we try to educate the public/students on the early warning signs of childhood cancer. We use the St Siluan Warning Signs for Childhood Cancer,” explains Prof Du Plessis. 

S – Seek medical help early for ongoing symptoms
I – White spot in the eye, new squint, sudden blindness or bulging eyeball
L – Lump on the stomach, pelvis, head, arms, legs, testicle or glands
U – Unexplained fever present for more than two weeks, weight loss, fatigue, pale appearance, easy bruising and bleeding
A – Aching bones, joints, back and easy fractures
N – Neurological signs, a change in walk, balance or speech, regression, continuous headaches with / without vomiting and enlarged head

According Prof du Plessis, his hope is to diagnose these kids early, the earlier they are diagnosed, the less treatment they are exposed. It is amazing to witness how the cancer kids adapt to their new normal and reality, says Prof Du Plessis. 

“They play soccer in the corridor, not in the park. One in fact learnt to walk in the hospital. Nurses and doctors become their new family. Their joy, strength and resilience is remarkable. Their laughter will make your heart melt. Your life will be forever changed, seeing a child fight cancer.”

News Archive

Fracking in the Karoo has advantages and disadvantages
2012-05-25

 

Dr Danie Vermeulen
Photo: Leatitia Pienaar
25 May 2012

Fracking for shale gas in the Karoo was laid bare during a public lecture by Dr Danie Vermeulen, Director of the Institute for Groundwater Studies (IGS). He shared facts, figures and research with his audience. No “yes” or “no” vote was cast. The audience was left to decide for itself.

The exploitation of shale gas in the pristine Karoo has probably been one of the most debated issues in South Africa since 2011.
 
Dr Vermeulen’s lecture, “The shale gas story in the Karoo: both sides of the coin”, was the first in a series presented by the Faculty of Natural and Agricultural Science under the theme “Sustainability”. Dr Vermeulen is a trained geo-hydrologist and geologist. He has been involved in fracking in South Africa since the debate started. He went on a study tour to the USA in 2011 to learn more about fracking and he visited the USA to further his investigation in May 2012.
 
Some of the information he shared, includes:

- It is estimated that South Africa has the fifth-largest shale-gas reserves in the world, following on China, the USA, Argentina and Mexico.
- Flow-back water is stored in sealed tanks and not in flow-back dams.
- Fracturing will not contaminate the water in an area, as the drilling of the wells will go far deeper than the groundwater aquifers. Every well has four steel casings – one within the other – with the gaps between them sealed with cement.
- More than a million hydraulic fracturing simulations took place in the USA without compromising fresh groundwater. The surface activities can cause problems because that is where man-made and managerial operations could cause pollution.
- Water use for shale-gas exploration is lower than for other kinds of energy, but the fact that the Karoo is an arid region makes the use of groundwater a sensitive issue. Dr Vermeulen highlighted this aspect as his major concern regarding shale-gas exploration.
- The cost to develop is a quarter of the cost for an oil well in the Gulf of Mexico.
- Dolerite intrusions in the Karoo are an unresearched concern. Dolerite is unique to the South African situation. Dolerite intrusion temperatures exceed 900 °C.

He also addressed the shale-gas footprint, well decommissioning and site reclamation, radio activity in the shale and the low possibility of seismic events.
 
Dr Vermeulen said South Africa is a net importer of energy. About 90% of its power supply is coal-based. For continued economic growth, South Africa needs a stable energy supply. It is also forecast that energy demand in South Africa is growing faster than the average global demand.
 
Unknowns to be addressed in research and exploration are the gas reserves and gas needs of South Africa. Do we have enough water? What will be the visual and social impact? Who must do the exploration?
 
“Only exploration will give us these answers,” Dr Vermeulen said.

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