Newsdeck

Newsdeck

Pen-like tool helps surgeons spot cancer cells

One of the biggest worries for patients undergoing cancer surgery is whether surgeons will miss some of the diseased tissue.

That worry could be over with a new pencil-sized tool developed by scientists and engineers at the University of Texas at Austin, according to a study published Wednesday.

The tool, dubbed the MasSpec Pen, allows surgeons removing a tumor to detect cancerous cells in tissues in seconds, allowing them to know immediately if they have found and removed all of the cancer. 

Currently it can take days to determine if the surgeons got everything. What they miss could lead to a return of the cancer or, at least, another operation to further clean up the affected tissues.

The study in Science Translational Medicine said the pen can identify cancerous tissue during surgery in about 10 seconds. 

The MasSpec Pen is touched to the tissue during surgery, drawing up small molecules to be analyzed by a miniaturized mass spectrometer built inside the stylus. It can identify the cancerous cells through distinct molecules called metabolites.

“Each type of cancer produces a unique set of metabolites and other biomarkers that act as fingerprints,” the study said.

That identifies any residual cancer in seconds, with a monitor linked to the pen declaring “normal” or “cancer.”

That allows surgeons to keep cleaning out cancerous cells until they are near-certain to have cleared everything. The surgeons can also better decide which tissue to leave in the patient’s body.

Tests on tissues removed from 253 human cancer patients showed the new tool was “more than 96 percent accurate,” according to the study.

“Any time we can offer the patient a more precise surgery, a quicker surgery or a safer surgery, that’s something we want to do,” said James Suliburk, head of endocrine surgery at Baylor College of Medicine and a collaborator on the project.

“This technology does all three. It allows us to be much more precise in what tissue we remove and what we leave behind,” he said. DM

Gallery

Please peer review 3 community comments before your comment can be posted

A South African Hero: You

There’s a 99.7% chance that this isn’t for you. Only 0.3% of our readers have responded to this call for action.

Those 0.3% of our readers are our hidden heroes, who are fuelling our work and impacting the lives of every South African in doing so. They’re the people who contribute to keep Daily Maverick free for all, including you.

The equation is quite simple: the more members we have, the more reporting and investigations we can do, and the greater the impact on the country.

Be part of that 0.3%. Be a Maverick. Be a Maverick Insider.

Support Daily Maverick→
Payment options

MavericKids vol 3

How can a child learn to read if they don't have a book?

81% of South African children aged 10 can't read for meaning. You can help by pre-ordering a copy of MavericKids.

For every copy sold we will donate a copy to Gift of The Givers for children in need of reading support.