Ultrasound-guided percutaneous biopsies are a safe and effective alternative to endoscopic biopsies for obtaining samples in the pancreas, a new study shows.
The study included 23 pancreatic biopsies in 22 patients. “We were able to obtain adequate samples in 22 of the 23 cases,” said Kedar Chintapalli, MD, professor of radiology at the University of Texas Health Science Center in San Antonio and lead author of the study. The ultrasound-guided biopsies can be performed with small needles or a biopsy gun inserted through the skin after local anesthesia. In 16 of the procedures a 20G fine-needle aspiration (FNA) needle was used; seven cases were performed with an 18G biopsy gun. “Unlike with CT, one can compress the intervening tissues under ultrasound, so that the skin to target distance is less. The entire procedure is performed under real-time ultrasound,” said Dr. Chintapalli. A pathology resident or fellow was available when the FNA cases were peformed to confirm that the sample was adequate. “Adequate samples were obtained by FNA needle and the larger biopsy gun. If we can get an adequate sample we should use a smaller needle,” he said.
In most cases (61%) a diagnosis was possible after two passes with the biopsy needle. There were no major complications. In 14 of the patients, malignancy was diagnosed; eight patients had benign results.
Keri Sperry | EurekAlert!
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
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