Articles tagged with Biopsies
Following the USPSTF recommendation against population-based PSA screening, median biopsy volume per urologist decreased by 29% and RP volume decreased by 16%. Prostate cancer diagnostic and therapeutic practice patterns have shifted significantly.
A SWOG study found widespread detection bias in prostate cancer biopsies, affecting younger, healthier men and those with family history or elevated PSA levels. Biases led to inconsistent results on risk factors, highlighting the need for rigorous data analysis and caution against assumptions.
Researchers have developed an imaging technique that can accurately diagnose and prognosticate transthyretin-related cardiac amyloidosis (ATTR-CA), a type of heart failure. The test uses technetium 99m pyrophosphate and has been shown to correctly identify ATTR in 91% of patients, ruling out other forms of amyloidosis.
Researchers analyzed tumor biopsies from 53 melanoma patients treated with immune checkpoint inhibitors to predict treatment response. The study found that adaptive immune responses, such as killer T cells, were significantly higher in responders after treatment began.
A study led by Johns Hopkins pathologists found routine hormone receptor testing for noninvasive breast cancer through needle biopsies is unnecessary and wasteful, costing millions annually. This practice could save up to $35 million yearly.
The first single actuator wave-like robot (SAW) has been developed by engineers at Ben-Gurion University of the Negev. It can move forward or backward in a wave-like motion and climb over obstacles, reaching speeds of up to 22.5 inches per second.
Researchers developed liquid biopsies to detect EGFR mutations in urine, plasma, and blood samples. The tests showed high sensitivity and specificity for identifying patients suitable for targeted treatment and predicting cancer recurrence.
Colorado State University researcher Jesse Wilson is developing a new microscope that can distinguish between benign and malignant pigmented skin lesions without a biopsy. The pump-probe technology uses a simpler laser source that's already widely used in telecommunications applications, making it more realistic for melanoma applications.
A new PET/MRI imaging test has been shown to improve the detection of significant prostate cancer, surpassing current multi-parametric MRI methods. The test's addition of molecular imaging based on F-18-choline positron emission tomography (PET) significantly improves the identification of clinically significant cancers.
The extent of resection in glioblastoma patients was found to be associated with improved overall and progression-free survival. Glioblastoma multiforme (GBM) patients who underwent gross total resection (GTR) showed a significant increase in one-year and two-year survival rates compared to those with subtotal resection or biopsy.
A new Phase III clinical trial will evaluate if magnetic resonance imaging (MRI) can replace the current standard of care for diagnosing prostate cancer. The PRECISE trial aims to determine whether MRI imaging can spare some men from undergoing biopsies, reducing potential side effects.
SmartPractice has donated $50,000 to TGen to support the development of liquid biopsies, which can detect breast cancer earlier and more precisely. The donation aims to identify genetic biomarkers in blood that could help prevent cancer from spreading.
Researchers from the University of Birmingham found that extended rest intervals can improve muscle growth by increasing myofibrillar protein synthesis. They recommend at least 2-3 minutes of rest between sets for novice weight trainers, while experienced lifters may not experience the same blunted response.
Researchers confirmed plasma genotyping's benefit in predicting treatment benefit for NSCLC patients, particularly those with higher tumor burden and younger age. However, tissue biopsies remain the gold standard due to low sensitivity of plasma tests, which may not fully replace them.
A new blood test uses a liquid biopsy to detect genetic mutations in non-small cell lung tumors, providing a rapid and accurate method for identifying patients who can benefit from targeted therapies. The test was found to be highly accurate, with 100% predictive value for the primary EGFR mutation and 79% for the KRAS mutation.
A new genetic urine test has been developed to predict high-grade prostate cancer, identifying 92 percent of men with elevated PSA levels who had high-grade cancers. The test could spare hundreds of thousands of men from unnecessary biopsies and reduce the risks associated with the procedure.
A new study found that prostate-specific antigen screening publications led to a decrease in biopsy rates by one-third, while also increasing the relative risk of post-biopsy complications. The researchers identified factors that put patients at higher risk, such as age and prior cancer diagnosis.
A study found that pathologists agree on invasive breast cancer diagnoses but not on non-invasive lesions like DCIS and atypia. Women with borderline findings may benefit from revised guidelines for clinical treatment and management.
A study presented at the American Association for Dental Research Annual Meeting found that saliva liquid biopsy accurately detected EGFR mutations in lung cancer patients, with high accuracy rates. The test showed promise as a non-invasive diagnostic tool for detecting actionable EGFR mutations.
Researchers found that acute and chronic kidney rejection are different parts of the same immune rejection process, making it a single entity at the molecular level. They identified interstitial fibrosis and tubular atrophy as an early warning sign of active but 'silent' rejection.
Researchers have developed a chimera design that allows antibodies to cross cell membranes, potentially reducing the need for invasive biopsies. This breakthrough could lead to improved diagnosis and treatment of diseases such as cancer, Alzheimer's, and viral infections.
Researchers at Duke University Medical Center found that meditation significantly reduced anxiety and fatigue in women undergoing breast cancer biopsies. Music also showed benefits, but to a lesser extent. The study suggests that meditation could be a valuable tool in improving patient care and satisfaction.
A new review suggests that targeted antibiotic therapy before prostate biopsy may lower sepsis rates. The study found 27 men need to receive antibiotics to prevent one infection, paving the way for safer procedures.
A long-term surveillance study shows chromoendoscopy is more effective than random biopsy or white-light colonoscopy in detecting dysplasia in patients with inflammatory bowel diseases. Chromoendoscopy identified precancerous lesions in 27 out of 208 examinations, while white-light examination detected them in only 11.
Researchers found that patients with IBS have reduced sensitivity in their gut nerves, contradicting previous theories of over-sensitivity. This desensitization could be a protective measure to prevent overstimulation.
Researchers at MD Anderson Cancer Center have developed a new liquid biopsy technique that can analyze tumor genes from blood samples using exosomes, providing a non-invasive alternative to traditional biopsies. The approach has the potential to improve prognosis, guide targeted therapy, and monitor treatment progress.
A study by University of Chicago cancer specialists found that expensive research biopsies in early cancer drug studies had no impact on subsequent drug development or treatment decisions. Only a small percentage of the biopsies yielded statistically significant results.
Liquid biopsies may help predict treatment responses and genetic mutations that impact prognosis in advanced breast cancer. The tests analyzed tumor DNA in blood samples, revealing potential benefits and risks of combining therapies.
A new study from The Ottawa Hospital and the University of Ottawa found that repeating an abnormal PSA test reduces unnecessary biopsies by 55 percent. Men with conflicting test results who had a second normal test were diagnosed with cancer within a year, suggesting the importance of repeat testing.
Researchers propose using cerebrospinal fluid as a liquid biopsy for early diagnosis, prognosis, therapeutic management, and tracking of brain cancer. Concentrations of circulating central nervous system tumor DNA are higher in CSF than in plasma.
A new MRI technique, DWIBS-MRM, has been shown to provide accurate results for breast cancer detection without the need for ionizing radiation or contrast agents. The technique achieved a high negative predictive value of 92% and may potentially reduce unnecessary biopsies.
A large trial shows liquid biopsy (BEAMing technology) detects tumor genotypes not found in tissue biopsies, enabling targeted therapy selection. Regorafenib benefits patients with KRAS and PIK3CA mutations, revolutionizing colorectal cancer treatment.
A study of 197 patients with breast cancer found that more selective use of biomarker testing could save up to $117 million annually. Testing larger excisional biopsies instead of reflexively testing smaller core biopsies would help pick up tumors eligible for targeted therapy, reducing unnecessary costs.
Researchers found that the low-cost, portable device could spare unnecessary biopsies for about 90% of patients with benign lesions. The study involved 147 U.S. and Chinese patients undergoing examination for potentially malignant squamous cell tumors.
A new urine-based test, Mi-Prostate Score, has been shown to improve prostate cancer detection compared to traditional models based on PSA levels. The test combines PSA with two markers for prostate cancer, T2:ERG and PCA3, and can detect more aggressive forms of the disease.
Researchers have developed a new screening method for prostate cancer recurrence using spatial light interference microscopy. The study found that disorganized connective tissue surrounding the glands is a key indicator of higher risk for recurrence.
A new assay using RT-MLPA has been developed to differentiate between germinal center B-cell-like (GCB) and activated B-cell-like (ABC) subtypes of diffuse large B-cell lymphoma. The assay is accurate, simple, flexible, short turnaround time, low cost, and efficient.
A recent Loyola University Health System study found that breast ultrasound examinations can eliminate the need for biopsy in many cases. The study concluded that if breast masses meet certain criteria, biopsies may be unnecessary.
A new MRI technique can detect cancerous cells by identifying telltale sugar molecules shed by the outer membranes of cancerous cells. This method could potentially replace or enhance current imaging tests like mammograms and CT scans, allowing for earlier diagnosis and more effective treatment.
A study found that pathologists' diagnoses for breast biopsies have a high rate of disagreement, especially for cases of atypical hyperplasia and ductal carcinoma in situ. The researchers suggest that obtaining a second opinion for these cases could help reduce unnecessary treatment.
A study found that circulating free DNA (cfDNA) from blood samples of patients with advanced non-small-cell lung cancer can detect EGFR mutations, which are associated with expected patient outcomes. The presence of these mutations in cfDNA was linked to shorter overall survival and reduced disease progression-free survival.
Researchers discovered a skin test that can detect abnormal proteins associated with Alzheimer's and Parkinson's diseases. The study used skin biopsies to compare patients' protein levels, revealing seven times higher tau protein levels for those with both conditions.
Researchers found the varicella zoster virus in 74% of biopsies with giant cell arteritis but only 8% of normal skin biopsies. The study suggests a new treatment approach for giant cell arteritis, combining steroids with antiviral medication.
Researchers found the varicella zoster virus in 74% of giant cell arteritis biopsies, suggesting a link between the chicken pox virus and the condition. The study suggests treating giant cell arteritis with a combination of steroids and anti-viral treatment may be effective
A team of scientists has developed flexible, microscopic hand-like grippers that can perform remotely guided surgical procedures and biopsies. The microhands use hydrogels and magnetic nanoparticles to provide energy and control, enabling the creation of biodegradable, miniaturized surgical tools.
A study of over 1,000 men found that targeted fusion-guided biopsy is more effective in detecting high-risk prostate cancer than standard biopsy. This method combines MRI and ultrasound images to pinpoint suspicious areas and diagnose cancers with greater accuracy.
A targeted magnetic resonance/ultrasound fusion biopsy detected more high-risk prostate cancers and fewer low-risk cancers compared to standard biopsy. The study found that adding standard biopsy to targeted biopsy provided limited benefits in detecting additional high-risk tumors.
A new breast cancer risk prediction model developed by the Mayo Clinic has been shown to be more accurate than the current screening standard in predicting breast cancer risk. The model uses histologic features of biopsied breast tissue and individual patient demographic information, classifying breast cancer risk with a concordance st...
Researchers at Mayo Clinic found that cancer biopsies do not increase the risk of cancer spreading, contrary to a long-held belief. Patients who underwent biopsies had significantly better overall survival rates compared to those who did not.
A Vanderbilt-led team has developed a method for detecting 'cell-free' tumor DNA in the bloodstream, showing promising results in distinguishing prostate cancer from normal controls. The technique, called a 'liquid biopsy,' demonstrated over three times the sensitivity of current PSA screening and accuracy rates of up to 91 percent.
A study found that testing for antibiotic-resistant Escherichia coli before prostate biopsy can reduce post-biopsy infections by nearly 40%. Patients with pre-existing, drug-resistant E. coli on rectal swab cultures had lower infection rates and shorter hospitalizations.
Researchers have identified a new protein, THSD7A, that turns the immune system against itself in kidney disease called membranous nephropathy (MN). This discovery enables the development of a blood test to diagnose MN, which can reduce the need for kidney biopsies by up to 85%.
A position paper by ESPGHAN Hepatology Committee outlines recommendations and a checklist for liver biopsy in infants and children. Liver biopsy is still necessary in follow-up after liver transplantation and for monitoring disease activity.
A study analyzing Medicare claims found that biopsies accounted for 43.1% of $38.3 million in diagnostic costs for patients with ultimately negative lung cancer diagnoses. Lung biopsies were also the most expensive test, with a median cost of $3,784 and an average cost including complications of $37,745.
A UCLA study found that patients with bladder cancer who did not receive optimal biopsies had a significantly higher risk of death from the disease. In fact, about half of patients' biopsies lacked sufficient material to accurately stage their cancer, leading to incorrect tumor staging and increased mortality rates.
Researchers have found that circulating tumor cells in the blood can accurately reflect the genetic status of metastatic breast cancer patients. This discovery could help guide treatment decisions and track patient progress without requiring repeat biopsies.
A novel robotic system is being tested to determine if it can make prostate cancer biopsies faster, more accurate, less costly, and less discomforting for patients. The robot uses real-time MRI images to guide the insertion of needles, potentially delivering therapies with greater precision.
A nationwide population-based study in Sweden found that six percent of men filled a prescription for antibiotics within 30 days after having a prostate biopsy, with a twofold increase in hospital admissions over five years. Men with prior infections or significant comorbidities were at highest risk.
Researchers have developed a 3-in-1 optical probe that combines spectroscopic techniques to detect cancerous skin lesions. The device may reduce unnecessary biopsies by providing a clear picture of which skin lesions are most likely cancerous, potentially saving lives.
A new epigenetic test has been validated to accurately predict prostate cancer risk, eliminating the need for unnecessary repeat biopsies. The test demonstrated a negative predictive value of 90% in one trial and 88% in another, confirming its potential as a diagnostic aid.