FNAs may produce too many false negatives. Follow up imaging suggested.
Fine needle biopsies (FNA) for suspicious lung nodules may produce false negatives and should be followed by an additional CT scan, according to research published in the latest issue of Journal of Thoracic Oncology.
Researchers from the Weill Cornell Medical College and Mount Sinai Hospital in New York City investigated the results from 170 patients who underwent an FNA biopsy that was found to be benign and found with CT follow up that 18 of these results were false negatives, 152 were true negatives.
There were several factors that associated with false negative results, said the researchers. These include false negative nodules being significantly larger than true negative nodules (mean, 27 mm versus 17 mm, p = 0.04), fewer imaging adjustments per needle pass (4.5 versus 6.4, p = 0.01), a higher proportion in whom the needle tip was not documented within the lesion (24% versus 5%, p =0.04), and a higher pneumothorax rate at any point during the procedure (50% versus 22%, p =0.04). There was also the lack of positive cultures.
When these variables were considered jointly, pneumothorax, solitary nodule, and the radiologist who performed the procedure were significant predictors of false negative results.
“A benign FNA biopsy result should have the procedure reviewed to ensure that results are reliable,” the researchers concluded.
Study with CT Data Suggests Women with PE Have More Than Triple the One-Year Mortality Rate than Men
April 3rd 2025After a multivariable assessment including age and comorbidities, women with pulmonary embolism (PE) had a 48 percent higher risk of one-year mortality than men with PE, according to a new study involving over 33,000 patients.
The Reading Room: Racial and Ethnic Minorities, Cancer Screenings, and COVID-19
November 3rd 2020In this podcast episode, Dr. Shalom Kalnicki, from Montefiore and Albert Einstein College of Medicine, discusses the disparities minority patients face with cancer screenings and what can be done to increase access during the pandemic.
Predicting Diabetes on CT Scans: What New Research Reveals with Pancreatic Imaging Biomarkers
March 25th 2025Attenuation-based biomarkers on computed tomography (CT) scans demonstrated a 93 percent interclass correlation coefficient (ICC) agreement across three pancreatic segmentation algorithms for predicting diabetes, according to a study involving over 9,700 patients.
Can Photon-Counting CT be an Alternative to MRI for Assessing Liver Fat Fraction?
March 21st 2025Photon-counting CT fat fraction evaluation offered a maximum sensitivity of 81 percent for detecting steatosis and had a 91 percent ICC agreement with MRI proton density fat fraction assessment, according to new prospective research.