Articles tagged with Lymph Nodes
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A study reveals lymph nodes as reservoirs of persistent tuberculosis infection, where the bacteria can persist for extended periods. This finding has significant implications for tuberculosis treatment and patient outcomes.
A team of researchers has identified a complex interaction between three cell types that work together to recruit protective NK cells in the lymph node after a viral infection. This collaboration enables the body to mount an effective response against certain viruses, such as mousepox.
Researchers found that irradiating chest lymph nodes in patients with early stage breast cancer improved overall survival by 2.4% compared to treating only the breast/thoracic wall. The study involved 4004 patients and showed no increase in non-breast cancer related mortality or serious complications.
Research in mice shows that chronic intestinal worm infection reduces the number of white blood cells in lymph nodes near the BCG vaccine injection site, hindering the immune response to tuberculosis. De-worming treatments can restore immune function after infection.
A new study presented at the AATS Annual Meeting shows that patients with malignant lymph nodes following preoperative therapy were less likely to survive than those with no cancer. The study found a strong association between pathologic nodal response and improved survival, highlighting the need for optimized neoadjuvant strategies.
Researchers found that married patients with melanoma are more likely to present with early-stage tumors and undergo sentinel lymph node biopsies, leading to better patient outcomes. The study analyzed over 52,000 patients with no distant metastases from 2010 to 2014.
Researchers at Cornell University developed a device that exposes human lymphomas to fluid flow similar to that in the lymphatics and parts of the lymph node. The team found that certain subsets of DLCBL lymphoma respond differently to fluid forces, regulating expression levels of adhesion proteins known as integrins and B-cell receptors.
A recent study published in The Breast Journal found that only 1.5% of patients with microinvasive breast cancer had positive lymph nodes, suggesting that these tiny tumors rarely spread cancer to other areas. This discovery allows surgeons to select patients who may benefit from lymph node sampling, sparing others from the procedure.
Researchers found that cancer cells from lymph node metastases can invade blood vessels and spread to distant organs like the lung and brain. This study suggests that lymph node metastases could be a source of fatal distant metastases, requiring targeted treatment.
Two new studies show that women with 'triple negative' or HER2 positive breast cancers who respond well to chemotherapy before surgery have a very low risk of having cancer cells in their lymph nodes. Chemotherapy can safely reduce or avoid lymph node surgery for these patients, potentially reducing long-term side effects.
A new study provides guidelines for assessing the severity of head and neck cancers by counting malignant lymph nodes, which are found to be a key factor in predicting patient survival. The number of positive nodes can categorize patients into distinct groups with varying outcomes.
Researchers used digital pathology slide images to train computer algorithms that could detect the spread of breast cancer to lymph nodes with high accuracy. The study found that AI algorithms outperformed human pathologists in detecting cancer spread, suggesting potential improvements in diagnosis and treatment outcomes.
Researchers have developed an AI application that can detect lymph node metastases in breast cancer patients with high accuracy, similar to human pathologists. This breakthrough could improve the efficiency of surgical pathology work and provide better prognostication.
A study found that younger women with breast cancer who underwent axillary lymph node dissection were more likely to experience arm swelling and decreased range of motion compared to those who received sentinel lymph node biopsies. The study highlights the importance of de-escalating axillary treatment in young patients.
A team of surgeons at Mount Sinai Hospital performed the first robot-assisted radical neck dissection in the US using the bilateral axillo-breast approach. The surgery successfully removed 59 lymph nodes from a patient diagnosed with thyroid cancer, showcasing the technique's potential for minimally invasive procedures.
Researchers at Penn Medicine are using a fluorescent dye to identify cancerous lymph nodes during head and neck cancer procedures, providing real-time guidance for surgeons. The study aims to minimize the risk of damage to healthy tissue while removing potentially suspicious lymph nodes.
Scientists have found that nanoparticles from tattoos can migrate to the lymph nodes and cause inflammation, leading to potential long-term health problems. The study provides strong evidence for the transport of toxic elements and tattoo pigments, highlighting the need for further research on the safety of tattoo inks.
Researchers at EPFL discovered key molecules driving lymphangiogenesis in response to worm infections, revealing a complex cross-talk between B cells and fibroblastic reticular cells.
A recent study has made a groundbreaking discovery in the treatment of anal cancer, suggesting that current methods of checking for lymph node spread may be overestimating survival rates. This finding has significant implications for patient care, potentially leading to more targeted and effective treatments.
A new international study involving 3,500 patients found that removing all lymph nodes in the area closest to the melanoma may not provide a significant survival advantage. The study suggests that patients can be spared from complications and repeat hospitalizations if only their sentinel lymph node is removed.
Researchers have found that lymph node metastases are not always the source of cancer's spread to other organs, and instead, distant metastases can originate directly from the primary tumor. In most cases (65%), both lymph node and distant metastases originated from the same cell type in the primary tumor, indicating independent origins.
A new analysis found that delaying lymph node biopsy more than 30 days after melanoma diagnosis does not adversely affect long-term clinical outcomes. The study examined 2,483 patients and found similar results in disease-free survival and melanoma-specific survival.
A major new study published in The New England Journal of Medicine found that completion lymph node dissection, a procedure to remove all lymph nodes near the original tumor, does not increase overall survival rates for melanoma patients. However, it can help gauge cancer spread and disease-free time.
The study found that Zika virus can persist in cerebrospinal fluid, lymph nodes, and colorectal tissue of infected rhesus monkeys for up to 42 days and 72 days respectively. The virus persistence may contribute to neurological issues associated with Zika infection in humans.
Researchers developed an experimental treatment that tames the immune system in rodents, restoring movement to paralyzed mice. The approach may combat autoimmune diseases in humans, as demonstrated in mouse models of multiple sclerosis and type 1 diabetes.
The new guidelines recommend forego routine axillary lymph node dissection in most women with no evidence of cancer on sentinel node biopsy. This approach can reduce the risk of painful and costly side effects such as lymphedema, infections, and reduced range of motion.
Patients with large breast tumors and no axillary lymph node signs before chemotherapy showed low risk of recurrence with SLNB. Follow-up data revealed high disease-free survival rates comparable to ALND, suggesting SLNB as a safe alternative.
Researchers found that adrenergic nerves control the daily cycle of immune cell trafficking, with T and B cells accumulating in lymph nodes during the day. This circadian pattern regulates the immune response, making mice more susceptible to infection when injected with antigens at night.
A large cohort of NSCLC patients with M1a disease found lymph node staging to have clinical significance and an impact on prognosis. The results showed that patients without regional lymph node metastasis (N0) had better lung cancer-specific survival rates compared to those with N1 or N2 disease. Lymph node involvement also emerged as ...
Research by Institute for Basic Science reveals that aging compromises the survival of naïve T cells by degrading the supportive environment within the lymph nodes. The study found that the production of a key protein responsible for attracting T cells to the lymph nodes declined with age, resulting in reduced effective immune response.
A systematic review of 30 studies found that axillary lymph node dissection increases the risk of chronic pain by 21%. Younger age, radiation therapy, and acute pain after surgery were also associated with chronic pain. The study calls for more research into risk factors and techniques to reduce pain.
Researchers discovered that intestinal worm infections trigger a significant increase in lymph node size and B-cell production, leading to enhanced antibody response. The study provides new insights into the complex interactions between the host and parasites.
Researchers used SPECT-MRI fusion to assess sentinel lymph nodes in early-stage cervical cancer patients, finding that it could identify metastases with high accuracy. This non-invasive approach may reduce the need for surgical removal of lymph nodes and improve patient outcomes.
Researchers at Massachusetts General Hospital identified subcapsular sinus macrophages that form a protective barrier around lymph nodes, blocking the spread of melanoma and other cancers. These SCS macrophages act as tumor suppressors but can be disrupted by cancer treatment drugs.
A new lipid, LPA, has been found to regulate lymphocyte motility in narrow lymph nodes. LPA enables efficient movement through spaces jammed with immune cells and stromal cells. This discovery may lead to novel strategies for controlling immune responses.
Researchers at ETH Zurich have discovered how dendritic cells advance from capillary vessels towards the lymph node. They found that the cells orient themselves with the help of a molecular mediator named CCL21, which creates a directional gradient.
Current diagnostic techniques make aggressive treatment unnecessary for many patients with metastasized skin cancer. The Sunbelt Melanoma Trial found that interferon therapy offered no benefits for stage III melanoma patients with minimal lymph node involvement.
A new procedure, Targeted Axillary Dissection (TAD), reduces need for invasive surgery in select patients with axillary metastasis. TAD involves removing sentinel lymph nodes and additional cancerous lymph nodes found during diagnosis, improving staging accuracy and reducing complications.
A new study by Cornell biomedical engineers introduces specialized natural killer cells that target cancerous tumor cells in lymph nodes, eliminating metastases. The 'super natural killer cells' use liposomes armed with TRAIL to induce apoptosis and prevent lymphatic spread of cancer.
A study of 173,797 female breast cancer patients found that catching cancers when they are small makes a difference to survival, even with modern therapies. Traditional factors such as tumour size and lymph node status have a significant influence on overall mortality independent of age and tumour biology.
The study found that regional node irradiation had a marginal impact on overall survival for patients with stage I, II, or III breast cancer. This was accompanied by improved disease-free and distant-disease-free survival rates, but long-term radiation effects remain unknown.
A study published in PLOS Pathogens found that older individuals are more susceptible to West Nile virus due to impaired immune responses. The researchers discovered that older mice had delayed antibody responses, reduced helper T cells, and lower chemokine levels, leading to higher viral loads and increased brain damage.
Researchers found that lymph node metastases do not require new blood vessels but instead use existing ones, providing a mechanism for resistance to angiogenic therapies. The study suggests alternative treatments may be needed for patients at risk of lymph node metastasis.
Researchers found that younger thyroid cancer patients with lymph node involvement have a lower survival rate compared to those with no spread. The number of lymph nodes involved plays a role in survival, with six or more nodes increasing the risk of death.
Researchers found that neutrophils can travel to lymph nodes within 8 hours of infection and prime other immune cells for attack. This collaboration between innate and adaptive arms may improve anti-microbial responses and prevent microbial spread.
Women with ductal carcinoma in situ breast cancer underwent axillary lymph node evaluation at high rates, defying guidelines. The study found that 17.7% of women undergoing breast-conserving surgery and 63% of those who had mastectomy underwent axillary evaluation.
Researchers identify 'Follicular Memory T cells' near lymph node entrances to screen for microbe re-entry. These cells help create potent antibodies in secondary antibody responses, outsmarting circulating memory cells. This discovery paves the way for more effective vaccines.
A study of 2.7 million US breast cancer patients found that surgeons are increasingly removing only the 'gatekeeper' lymph nodes, rather than all underarm lymph nodes, when a biopsy shows cancer. This shift is attributed to the lower risks for patients who undergo sentinel lymph node biopsy alone.
A new discovery by scientists at the University of Turku reveals a key role for the plasmalemma vesicle-associated protein (PLVAP) in regulating the transport of proteins and migration of white blood cells into lymph nodes. The findings provide insights into rapid defence responses in the human immune system.
A risk stratification model based on lymph node characteristics confirms the true lack of lung cancer in sampled nodes. The model categorizes low-risk nodes with a high chance of being truly negative, while high-risk nodes have a significant false-negative rate.
Researchers at UT Arlington are developing tissue-engineered artificial lymph nodes that can attract prostate cancer cells, allowing for more targeted treatments and potentially longer patient survival. The technology, led by Liping Tang, could also help identify the biological signals that enable cancer to migrate throughout the body.
The study reveals IL-37's role in regulating the adaptive immune system by inhibiting antigen recognition. This allows for potential manipulation of IL-37 levels to sensitize or desensitize the immune system in various diseases.
Research found that post-operative radiation therapy improved overall survival for patients with resected NSCLC, with a median survival time of 42 months compared to 38 months without PORT. Factors associated with better survival included female gender, adenocarcinoma histology, and younger age.
Researchers at Wayne State University are working on a grant-funded project to design molecular vaccines for Type 1 diabetes and other autoimmune diseases. They aim to use a novel approach called 'hitchhiking' to deliver therapeutics to specific sites in the lymph nodes.
Researchers at Duke Medicine and Duke-NUS Graduate Medical School Singapore detail how Yersinia pestis bacteria hitchhike on immune cells in lymph nodes to spread the bubonic plague. New therapies that block host immune function show promise in preventing infection and improving survival.
A new minimally invasive technique using endoscopic biopsy of lymph nodes has been shown to be sensitive and accurate in staging non-small cell lung cancer. The approach avoids the need for surgical mediastinal staging, reducing complications and improving patient outcomes.
Researchers identified racial disparities in the use of sentinel lymph node biopsy (SLNB) among black and white women with early-stage breast cancer. Black women were 12% less likely to undergo SLNB, contributing to higher risk for lymphedema compared to white patients.
A Mayo Clinic study found that ultrasound images of underarm lymph nodes are more accurate in overweight and obese breast cancer patients than in those with a normal body mass index. The research suggests that soft fatty tissue can be compressed during ultrasounds, leading to better specificity and accuracy for these patients.
New research finds that radiotherapy after mastectomy reduces recurrence and death rates for women with early breast cancer in 1-3 positive lymph nodes. The study, which analyzed data from 3786 women, shows a significant benefit of radiotherapy regardless of chemotherapy or hormonal therapy use.
A decade-long study confirmed the effectiveness of lymphatic mapping and sentinel-node biopsy in detecting melanoma's early spread to lymph nodes, significantly prolonging patients' survival rates. The technique spares patients from unnecessary surgery and substantial costs for those with non-spreading tumors.