Positron emission tomography (PET) imaging of cancer patients after they received COVID-19 vaccinations showed abnormal radiotracer uptake in lymph nodes, researchers reported. The retrospective study ...

Swollen lymph nodes in the armpit may indicate an infection, injury, or disease that requires medical attention. However, it’s usually not a sign of cancer. Lymph nodes are critical parts of the ...

Swollen lymph nodes in your neck, armpit, head, and other parts of the body often occur when your body is fighting an ...

Lymph nodes are part of the body’s immune system. A swollen lymph node in the armpit may be a sign of a bacterial or viral infection, an injury, or a serious health condition, such as cancer. The ...