New microscope detects cancer deep inside body



New microscope detects cancer deep inside body
Washington: Tiny mechanical microscopes — those that can see inside single living cells — are increasingly being used to diagnose illness in hard-to-reach areas of the body.

This is a groundbreaking technology, but specialists need improved, standardized guidelines to advance diagnostic accuracy, said New York-Presbyterian Hospital/Weill Cornell Medical Center’s Dr. Michel Kahaleh.

Dr. Kahaleh often threads a tiny microscope into the narrow bile ducts that connect the liver to the small intestine to hunt for cancer.

He also uses the device to minutely explore the pancreatic duct as one of a few doctors in the country to use such technology in this way.

But because these devices are comparatively new, Dr. Kahaleh, chief of endoscopy at the Center for Advanced Digestive Care at NewYork-Presbyterian/Weill Cornell and professor of clinical medicine at Weill Cornell Medical College, suspected that the specialists who are beginning to use them might be interpreting what they see in different ways.

That’s exactly what he and his research team discovered, when they sent six different specialists at five different medical institutions recorded videos taken by a probe-based confocal laser endomicroscopy (pCLE) deep inside 25 patients with abnormally narrowed bile ducts.

The study demonstrated that there was “poor” to “fair” agreement on the clinical significance of what the physicians were viewing in the videos — whether what they saw represented cancer, simple inflammation, or a benign condition.

“That means physicians need to come up with a standard way of interpreting what the videos reveal in order to properly use this ‘amazing technology,’” said Dr. Kahaleh, who is also medical director of the Pancreas Program at Weill Cornell.

“We can see detail that was just unimaginable a decade ago — this breakthrough is born for the bile duct and those tiny tubes and complicated organ structures that no one has ever been able to visualize before.

“And when physicians are certain of what they are seeing, we will be able to greatly improve patient treatment, avoiding unnecessary surgery whenever possible,” he noted.

The study was published in Digestive Diseases and Sciences.

ANI