Articles tagged with Lymph Nodes
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
A new study found that adding a contrast agent to MRI improves the accuracy of detecting lymph node metastases. The researchers concluded that incorporating contrast enhancement in malignancy criteria improves diagnostic test accuracy, and histopathologic examination should still be used as a gold standard.
A recent study found that radiation therapy significantly improves regional recurrence control in melanoma patients who underwent lymphadenectomy. The treatment reduced the risk of cancer returning to the lymph nodes by 12 percentage points compared to observation.
A randomized 10-year study found no significant differences in survival rates between women who received internal mammary chain radiation treatment and those who didn't. The study also showed that radiation treatments, even without additional IMC-RT, are still necessary for these patients.
Researchers have identified two ultrasound patterns that can accurately identify cancer spread and tumor burden in melanoma patients. These patterns can predict overall survival and help doctors decide on the amount of surgery required.
A study published in World Journal of Gastroenterology found that a large number of dissected lymph nodes in D2 dissection improves long-term survival and reduces recurrence rate for patients with node-negative gastric cancer. The number of resected lymph nodes is a key prognostic indicator, and increasing it leads to better survival o...
A new study published in JNCI finds that training methods for surgeons performing breast cancer sentinel lymph node resection are highly effective. The study evaluated three training methods and found a statistically significant positive association between procedural errors and false-negative rates.
A study found that increasing lymph node removal did not increase the number of patients with stage III colorectal cancer. Despite higher lymph node yields, the proportion of patients diagnosed with stage III cancer remained unchanged.
A new study found that lymph nodes are not necessary for the immune system to respond to infections. Instead, the liver can serve as a surrogate structure for T-cell activation. This discovery suggests an alternative role for the liver and may explain why patients receiving a liver transplant sometimes inherit the donor's allergies.
Research suggests that lymph nodes are not necessary for marshalling T-cells to respond to skin breaches, with the liver playing a key role instead. This discovery implies a novel function for the liver and offers insights into the evolution of immune systems in mammals.
A new molecular biology-based technique has been shown to detect potential breast cancer spread with high accuracy, speed, and specificity. The Lymphoseek molecule binds to lymph node white blood cells, allowing for targeted detection of nearby 'sentinel nodes' that are most likely to contain cancer.
A noninvasive test using diffusion weighted MRI accurately identifies benign from malignant pelvic lymph nodes in patients with gynecologic malignancy. The test has a sensitivity of 92% and specificity of 85%, making it a useful tool for determining the extent of cancer spread.
A study from the Medical College of Wisconsin found that the removal of more than five lymph nodes and presence of cancer in the lymph nodes are key factors linked to lymphedema. The study suggests that all women undergoing axillary surgery should be counseled on their risk for lymphedema.
A multicenter study found EUS elastography to be highly sensitive and specific in distinguishing benign from malignant tissue, with a sensitivity of 92.3% for pancreatic lesions and 91.8% for lymph nodes. The technique may help characterize pancreatic masses after negative EUS-FNA and increase the yield of EUS-FNA for lymph nodes.
Duke researchers found that a blood-derived lymph node dendritic cell type plays a key role in developing acute T-cell responses. This discovery challenges traditional views on dendritic cell function and has implications for vaccine science and autoimmune disease therapy development.
Researchers at Thomas Jefferson University found a biomarker, guanylyl cyclase 2C (GUCY2C), that predicts disease recurrence in colorectal cancer. The study revealed that 87.5% of patients had positive GUCY2C expression and 20.9% developed recurrent disease.
Researchers identified guanylyl cyclase C as a molecular marker for metastatic colorectal cancer that can detect occult metastases in lymph nodes, improving risk stratification. About 13% of patients with pN0 colorectal cancer were found to be free of tumor cells, while 87% had results suggesting occult metastases.
Researchers discovered that atypical spitzoid tumors (ASTs) respond well to treatment, with 27 patients experiencing complete remission after a lymph node biopsy. The study suggests ASTs behave differently from other types of melanoma and may not be as aggressive.
Two studies published in The Lancet show that removing pelvic lymph nodes or external beam radiotherapy does not improve survival rates for women with early endometrial cancer. Removal of lymph nodes increased risk of death by 16%, while radiotherapy showed no benefit in terms of overall survival.
A research article compares CT findings in mesenteric tuberculosis and non-Hodgkin's lymphoma (NHL), revealing specific enhancement patterns and anatomic lymph node distribution. The 'sandwich sign' is more often found in NHL, aiding in differential diagnosis between tuberculosis and untreated NHL involving the small bowel mesentery.
A study of 236 advanced gastric cancer patients found that the metastatic lymph node ratio is significantly correlated with five-year survival rates and can be used to project survival rates. The MLR also reflects the extent and efficiency of lymphadenectomy.
A new study at Fox Chase Cancer Center found that irradiating axillary and supraclavicular lymph nodes may not improve outcomes for breast cancer patients with negative lymph nodes. The research suggests avoiding radiation to these areas may reduce serious side effects such as lymphedema and pulmonary problems.
A Northwestern University study found that over 60% of US hospitals do not comply with the recommendation to examine 12 lymph nodes after colon cancer surgery, leading to improved survival rates when more nodes are checked.
Researchers at Yerkes National Primate Research Center and Emory Vaccine Center found that trapping white blood cells in lymph nodes can help mice fight chronic viral infections. FTY720, an experimental drug, prevents white blood cells from leaving lymph nodes, improving immune response against the virus.
A team of researchers has found that trapping white blood cells in the lymph nodes can help mice overcome a chronic viral infection. Experimental drug FTY720, also known as fingolimod, prevents white blood cells from responding to the virus by desensitizing them to sphingosine-1-phosphate.
Researchers found that breast cancers behave differently before and after age 70. Women aged under 70 are less likely to have aggressive tumors spreading to lymph nodes as they age, but the opposite occurs for women over 70. Decreased immune defense mechanisms may play a role in this change.
A recent study found that USFNA of axillary lymph nodes in patients with newly diagnosed breast cancer improves diagnostic accuracy while minimizing negative results. The procedure, which measures cortical thickness, is safe and minimally invasive.
A new study of 145 triple-negative breast cancers found that moderate or low-grade lesions were present in 23% of cases, with only a small percentage showing lymph node metastasis. The findings suggest that triple-negative breast cancers are a heterogeneous group and may not always be associated with cancer spread.
The use of sentinel lymph node biopsy (SLNB) increased substantially from 1998 to 2005, but disparities persist in access to the procedure. Non-white women, older women, and those living in poorer areas were less likely to receive SLNB than their counterparts, highlighting uneven access to this less-invasive breast cancer staging test.
A new blood biomarker has been discovered that enables accurate prediction of prostate cancer metastasis. The biomarker, endoglin, measures plasma levels associated with an increased risk of cancer spread into regional lymph nodes. Adding this marker to current methods improves accuracy from 89.4% to 97.8%.
Scientists have discovered that immune cells confront viruses just inside the lymph node, not deep within the organ. This breakthrough could help design effective anti-virus vaccines against deadly viruses like HIV. The study sheds light on how the immune system operates during a viral infection.
Researchers at Mayo Clinic have developed a new technique using two small flexible tubes to stage lung cancer, achieving a 93% accuracy rate in finding malignant lymph nodes. This method is less invasive and more precise than traditional surgical methods, allowing patients to recover the same day.
A study suggests that endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) and its combination with endobronchial ultrasound-guided fine-needle aspiration (EBUS-FNA) can accurately determine lung cancer stage. These minimally invasive methods show high sensitivity rates, potentially replacing traditional surgical procedures.
Scientists discovered that metastatic pancreatic cancer cells produce enough of the protein IDO to evade detection by the immune system, allowing them to spread in the body. This finding may lead to new ways to detect pancreatic cancer spreading to lymph nodes and enhance tumor immune therapy strategies.
Researchers found that VEGF-C gene therapy induced robust growth of lymphatic capillaries in mice, leading to functional collecting lymphatic vessels and improved lymph node transplantation outcomes. The treatment also showed promise in preventing systemic dissemination of metastases and improving patient safety.
A study found that hospitals with higher lymph node examination rates did not see better patient survival after colon cancer surgery. The rate of detecting node-positive tumors remained the same across all hospital groups.
A new study suggests that an ultrasound-guided fine needle biopsy technique can accurately detect cancer in lymph nodes with a false positive rate of only one percent. The method has been shown to be highly accurate and may reduce the need for unnecessary sentinel node operations.
Research reveals lymph nodes facilitate neuroinvasion of prions at low doses, accelerating infection after node removal. The study's findings have important implications for developing new prevention and treatment strategies for prion diseases.
A new study found that racial differences in breast cancer survival are most apparent in advanced stages of the disease, with African American women having poorer outcomes than white women. After adjusting for clinical factors, the disparities persisted, indicating non-clinical factors may contribute to survival differences.
A recent study found that nodal status is the strongest determinant of outcome after neoadjuvant therapy for esophageal cancer. Patients with complete pathological responses had better survival rates, but only if they also had no nodal involvement.
The incidence of early stage metastatic breast cancers is increasing, attributed to changes in clinical practice. Sentinel lymph node biopsies often detect small numbers of tumor cells that do not necessarily indicate cancer spread.
A systematic review of 17 studies found that increased lymph node evaluation is associated with improved survival rates for patients with stage II and III colon cancer. However, many patients do not receive adequate lymph node testing.
A study of 17 studies from nine countries found that removing and examining more lymph nodes during colon cancer surgery improves patient outcomes. The research suggests that knowing how far a cancer has spread leads to tailored treatment, ultimately resulting in better survival rates for patients.
Researchers found that SPECT/CT imaging enhances sentinel node identification in overweight patients with breast cancer. The study suggests this improved technique can reduce the need for unnecessary surgery and improve treatment outcomes.
The GeneSearch Breast Lymph Node assay has been shown to have higher sensitivity and specificity in detecting breast cancer metastases compared to traditional intra-operative tests. The test's accuracy enables surgeons to make more informed treatment decisions and potentially reduce the need for second surgeries.
Scientists have discovered two protein biomarkers associated with breast cancer spread, which could help predict patient outcomes and guide treatment decisions. The study found that overexpression of one protein and underexpression of another were highly accurate in identifying patients at risk of metastasis.
A study found that women with more than four positive lymph nodes are four times more likely to develop lymphedema when treated with a boost, despite similar risks of nodal recurrences. The increased risk may outweigh the benefits of receiving an extra dose of radiation.
A study found that elderly women with breast cancer are often under-staged, under-treated, and miss out on life-saving treatments. The researchers analyzed data from a tumor registry database and found that 70% of patients were in early stages of cancer but missed out on lymph node evaluation.
A study found that less than one-third of gastric cancer patients had adequate lymph node assessments, leading to compromised survival. Median survival in regions with the highest ALNA rate was 33 months, while in regions with the lowest rate it was only 17 months.
Researchers at Cedars-Sinai Medical Center developed new objective criteria to enhance the reliability of PET scans in detecting breast cancer metastasis. The criteria use a standardized uptake value (SUV) threshold of 2.3, which was found to accurately diagnose lymph node involvement with 100% specificity and positive predictive value.
A new imaging technique using whole-body positron emission tomography (PET) scans can accurately predict whether breast cancer has spread to the lymph nodes in the armpit prior to surgery. The scans were found to be 72% accurate in identifying cancers with metastases, making them a valuable tool for healthcare providers.
A new test has been developed to detect prostate cancer spread in lymph nodes at an earlier stage, which may lead to better treatments and improved patient outcomes. The test was found to be more sensitive than existing methods and associated with increased recurrence and decreased survival rates.
A new approach to lymph node examination, called targeted lymph node examination, has been shown to improve staging of colon cancer. This technique uses blue dye to identify the sentinel node, which is the first node to receive lymphatic drainage from a primary tumor site.
A study published in the Journal of the National Cancer Institute found that sentinel lymph node biopsy resulted in better arm function, improved quality of life, and faster recovery times compared to standard axillary lymph node dissection. Women who underwent sentinel lymph node biopsy had a low recurrence rate and equivalent surviva...
Researchers reveal that specific physical and chemical cues guide CD8+ T cells to sites of activation in the lymph node. This discovery provides insight into the fundamental behavior of the immune system and suggests new approaches to vaccine strategies.
The APS lecturer's videos provided a real-time look at immune cell interactions in a mouse lymph node, highlighting how dendritic cells teach T cells to respond to infections. The research focuses on leukocyte recruitment and trafficking, particularly in the lymph nodes.
Researchers found that up to 25% of injected malaria parasites stop in lymph nodes close to the bite site, where they can interact with immune cells and degrade. While partially developed or destroyed parasites may not contribute to symptoms, their presence could affect how the immune system responds to infection.
A study of 9059 breast cancer patients found that older women had less complete medical records, larger tumors, and fewer lymph nodes examined. As a result, they received less effective treatments, such as radiotherapy and chemotherapy, compared to younger patients.
Researchers developed criteria to evaluate CT scans for cancer-free lymph nodes, showing a 94% accuracy rate. Patients who met the criteria were spared from unnecessary surgery, reducing recovery time and complications.
Performing a sentinel lymph node biopsy as an outpatient procedure prior to mastectomy can help guide the optimal surgical procedure for patients. This approach allows for more informed decisions regarding radiation therapy and reconstruction, potentially improving cosmetic results.
The consensus panel recommends minimizing open surgical biopsies in favor of minimally invasive needle breast biopsies, which can help reduce complications and costs. They also suggest using sentinel lymph node biopsy and MRI for accurate staging and diagnosis.