Colorectal Cancer

Polyps in colon may lead to colon cancerColorectal cancer is the leading cancer in Singapore. Worldwide, 655,000 people die from colorectal cancer each year. Many colorectal cancers are thought to arise from adenomatous polyps in the colon. These mushroom-like growths are usually benign, but some may develop into cancer over time. Diagnosis of colon cancer is currently done through a combination of blood test, stool test and colonoscopy.

“It is important to diagnose colon cancer early,” said Dr Ng Chin, General Surgeon of Raffles Surgery Centre, as up to 95% of early cancers can be cured with an operation. Early diagnosis can also halt the progression of cancer.”

Although it may be hidden in the depths of your bowels, colorectal cancer can be prevented through regular colonoscopy screening and the removal of polyps.

During a colonoscopy, an AI module (GI Genius) assesses and processes each frame to highlight potential polyps and tumours. This helps endoscopists and specialists evaluate the entire colon with more precision, overcoming the challenge of identifying small polyps that may otherwise go unnoticed by the human eye.

Related articleColonoscopy with Artificial Intelligence: GI Genius

Treatments for colorectal cancer

Treatment of colorectal cancer is stage dependent. Early-stage colorectal cancer is potentially curable. When colorectal cancer has spread to other organs, the cancer is less likely to be curable. Surgery is the mainstay of treatment. Chemotherapy and radiotherapy may be required, depending on the staging.

“The aim of curative surgery,” explained Dr Wong Kutt Sing, General Surgeon, Raffles Surgery Centre, “is to completely remove the cancer-bearing segment of the bowel with adequate margins and radical en-bloc resection of its mesentery and lymph nodes.”

specialists preparing laparoscopic instruments for surgeryLaparoscopic colectomy is a minimally invasive (keyhole) surgical technique to treat colorectal cancer. Potential benefits of this technique include smaller incisions, less postoperative pain, earlier return of bowel function, earlier resumption of oral intake, shorter hospital stay and earlier return to normal activities. The main disadvantage of laparoscopic colectomy is increased operating time.

Long-term studies comparing laparoscopic and open colectomy have demonstrated equivalent survival rates between the 2 techniques. One study from Spain showed better survival in Stage 3 colon cancer in patients who have undergone laparoscopic colectomy.

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