Digestive Health

Updated 04 July 2014

Focused colon polyp removal saves on surgery

A new team procedure to remove colon polyps eliminates the need to remove the entire section of the colon containing the polyp.


A team-based procedure for removing difficult or large precancerous colon polyps is effective and eliminates the need to take out part of a person's colon to reduce their cancer risk, a small clinical trial shows.

In the procedure, a surgeon manipulates the colon from outside the organ so that a second doctor can get to the hard-to-reach polyp and remove it from inside the colon via colonoscopy.

This team procedure, called "laparoscopic-assisted colonoscopy with polypectomy", eliminates the need for a surgeon to remove the entire section of the colon that contains the polyp, a procedure called "laparoscopic hemicolectomy".

Read: Colonoscopy may miss 8% of cancers

New procedures

A clinical trial comparing the new and old procedures found that laparoscopic-assisted colonoscopy is as safe and effective as surgery to remove part of the colon, but results in shorter hospital stays and less harm done to patients, said lead researcher Dr Jonathan Buscaglia.

"The advantage is that the polyp is removed while sparing that section of colon, which is important to patients," said Buscaglia, director of advanced endoscopy at Stony Brook University College of Medicine, in New York. "Patients often suffer from diarrhoea or abnormal bowel movements when they have part of their colon removed."

Buscaglia was to present his team's findings at the Digestive Disease Week meeting, held in Chicago.

Colon cancer has decreased about 30% in recent years, mainly because doctors are eliminating the risk by finding and removing precancerous polyps during routine colonoscopies, Buscaglia said.

In a colonoscopy, a doctor scans the inside of a person's colon using a thin, flexible tube inserted through the anus. A small video camera transmits images of the colon, and if a polyp is found then surgical tools can be sent through the tube so doctors can remove the growth on the spot.

Better and less invasive procedure
But sometimes these polyps are either very large or located in a fold or bend of the colon, making it tough for doctors to remove them during a colonoscopy, Buscaglia explained.

In those cases, the alternative has been to remove the section of the colon that contains the polyp, and then sew the colon back together.

Buscaglia and his colleagues decided to test what they felt would be a better and less invasive way to get at these polyps.

In their team procedure, a surgeon makes a tiny incision in the abdomen and uses a thin, illuminated tube called a laparoscope to move the colon around from the outside of the organ.

By manipulating the organ from the outside, they can move the polyp into a better position for removal from within by a second doctor who is performing a simultaneous colonoscopy.

Quicker procedure

The new clinical trial involving 28 patients found that those who underwent the team procedure had an average hospital stay of 2.5 days, while those who had a section of colon removed spent four days in recovery.

Patients treated with the team procedure also lost less blood and required less IV fluid in the operating room. The procedure itself also took much less time, 95 minutes on average compared with 179 minutes for removing part of the colon.

After surgery, team-treated patients were able to resume eating solids foods in less than two days, while the surgical patients had to wait almost four days.

This new procedure could prove very cost-effective, even though it requires two doctors instead of just one, Buscaglia said.

Read more:

Virtual colonoscopy gentler
The importance of a colonoscopy

Routine colonoscopy can save lives

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Digestive Health Expert

Dr. Estelle Wilken is a Senior Specialist in Internal Medicine and Gastroenterology at Tygerberg Hospital. She obtained her MBChB in 1976, her MMed (Int) in 1991 and her gastroenterology registration in 1995.

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