Dr Voon highlights the importance of early detection in improving treatment outcomes. (This image is for illustrative purposes only. It does not represent an actual medical event, procedure or interaction between healthcare professionals and patient.)
NOVEMBER is Stomach Cancer Awareness Month, dedicated to raising awareness about one of the world’s most common and deadliest cancers — particularly in Asia.
While Malaysia’s rates are lower compared to neighbouring countries, most local patients are still diagnosed at advanced stages, when the chances of recovery are much lower.
Sunway Medical Centre Penang consultant general and upper gastrointestinal surgeon Dr Kelvin Voon explains, “The challenge with stomach cancer is that it develops silently.
Early symptoms are often vague and easy to dismiss as ordinary gastric discomfort. But when detected early, stomach cancer is highly treatable and survival outcomes are much better.”
A Malaysian snapshot
According to the National Cancer Registry, gastric cancer ranks among Malaysia’s top ten cancers. It is most common among Malaysian Chinese, followed by Malays and Indians.
“Late presentation remains a major concern,” says Dr Voon. “Many patients come to us only when symptoms become severe — by then, the cancer is often already at an advanced stage.”
Understanding the risks
The main risk factors for stomach cancer include:
> Helicobacter pylori (H. pylori) infection
> Chronic gastritis or long-term stomach inflammation
> Smoking
> High-salt or preserved foods
> Family history of stomach cancer
> Previous stomach surgery
Dr Voon adds, “Infections like H. pylori can cause long-term changes in the stomach lining that increase cancer risk. But lifestyle habits — particularly diet and smoking — also play a major role.”
Recognising the warning signs
Early symptoms of stomach cancer can be subtle and easily mistaken for minor gastric issues. These include:
> Indigestion or heartburn
> Bloating or discomfort after eating
> Early fullness after small meals
“Many people ignore these early warning signs, thinking it’s just gastric wind,” says Dr Voon. “But if symptoms persist for weeks, it’s time to see a doctor.”
More serious warning signs that require immediate medical attention include:
> Persistent vomiting or difficulty swallowing
> Black stools
> Unexplained weight loss
> Fatigue or anaemia
Early detection saves lives
Endoscopy remains the most accurate method for diagnosing stomach cancer in its early stages. This procedure allows doctors to view the stomach lining directly and take a biopsy if needed.
“In countries like Japan and Korea, routine endoscopic screening has significantly improved survival rates,” Dr Voon explains.
“For Malaysians, those over 50, with a family history of stomach cancer, or a past H. pylori infection, should discuss screening with their doctor. Early detection can mean the difference between cure and advanced disease.”
Modern, multidisciplinary treatment
Managing stomach cancer requires a multidisciplinary team (MDT) approach that includes surgeons, oncologists, radiologists, pathologists, dietitians, and physiotherapists. Treatment depends on the stage of the cancer and the patient’s overall condition.
> Early-stage cancer can often be treated through endoscopic resection or minimally invasive surgery.
> Locally advanced cancer usually requires a combination of surgery and chemotherapy.
> Advanced or metastatic disease may benefit from chemotherapy, targeted therapy, or immunotherapy.
Dr Voon shares, “We tailor treatment for each patient. Even in advanced cases, a combination of surgery and modern therapies can improve quality of life and extend survival.”
Precision and progress: robotic-assisted surgery
Advancements in technology have transformed the way surgeons treat stomach and gastrointestinal cancers.
“At Sunway Medical Centre Penang, the robotic surgery system allows us to perform complex stomach cancer surgeries with greater precision and control,” Dr Voon explains.
The robotic system enhances the surgeon’s dexterity with 3D high-definition vision and wristed instruments that move more precisely.
“This enables smaller incisions, less pain, reduced blood loss, and faster recovery,” says Dr Voon. “It’s particularly beneficial for delicate, deep-seated cancers where accuracy is crucial.”
Recovery beyond surgery
Recovery from stomach cancer doesn’t end in the operating theatre. “Patients often need nutritional guidance to adapt to changes after surgery,” Dr Voon notes.
“Physiotherapy helps restore strength, and emotional support is essential to cope with anxiety or lifestyle adjustments after treatment.”
He emphasises that holistic care — combining medical treatment with nutritional and psychological support — plays a key role in helping patients regain independence and quality of life.
Prevention is powerful
Dr Voon reminds Malaysians that prevention starts with simple daily choices. “Eat a balanced diet rich in fruits and vegetables, reduce salty and preserved foods, quit smoking, and limit alcohol,” he advises.
“Regular health checks and endoscopic screening for at-risk individuals are the best defences against stomach cancer.”
A call to awareness
“Stomach cancer may be a silent disease, but awareness can break that silence,” says Dr Voon.
“By recognising the symptoms early, seeking timely medical care, and adopting a healthy lifestyle, we can change outcomes for many Malaysians.”
Don’t ignore persistent stomach symptoms — early detection saves lives.
KKLIU 3662 / EXP 31.12.2027
