Lymph node metastasis occurs in "metastatic" lymph nodes, lymph nodes that have been infected by cancer from elsewhere in the body. A part of the immune system, lymph nodes are tiny ovals placed ...

A new report is reassuring regarding the long-term cardiopulmonary safety of internal mammary lymph node irradiation after breast cancer surgery. After a median follow-up 15.7 years among almost 4000 ...

Tumors, such as melanoma, release nanovesicles called exosomes (gray) that travel and lodge in the lymph nodes. There they corrupt the behavior of lymph cells. The lymphatic vessels (green) branch out ...

A newly described stage of a lymph node-like structure seen in liver tumors after presurgical immunotherapy may be vital to successfully treating patients with hepatocellular carcinoma, according to a ...

Dye is injected into the breast, one to four of the nodes is identified with a probe and removed to see if cancer cells are present. Lymph nodes are small organs, typically ranging from the size of a ...

The lymphatic system, made up of lymphoid tissues known as nodes and vessels, is part of the human immune system. It is involved in protecting the body against infection, by delivering immune cells, ...

The popliteal lymph nodes lie in the tissues behind a person’s knee. Infections and autoimmune conditions can cause them to swell. It is rare for cancer to affect the popliteal lymph nodes. According ...

Swollen lymph nodes in the groin can result from viral, bacterial, or fungal infections, including some sexually transmitted infections (STIs). Infections in the feet and some cancers can also affect ...

Allergies occur when your immune system overreacts to allergens like pet dander, pollen, mold, certain foods, or medications. Allergy symptoms may include a runny nose, congestion, coughing, wheezing, ...